Method of controlling process of multiparameter test

FIELD: methods of industrial inspection and control.

SUBSTANCE: method can be used when constructing control systems for different parameters of like items provided with route sorting. Items intended to be controlled for specific parameters are disposed in parallel. Additional interoperation stock is formed of items assumed to be suitable. The stocks have admissible top and lower bounds of volumes. Item are subject to shift for all the subsequent parameters correspondingly to assigned priority. When admissible bounds of volume of interoperation stocks are exceeded, the inspection procedure has to be stopped.

EFFECT: improved efficiency of inspection.

3 cl, 6 dwg

 

The invention relates to the field of industrial process control control and can be used to build systems multivariable control products.

There is a method of management control process implemented in the area of automatic control (Abomin, Emolumentum, Enhancin. Controlling machines for automatic production lines. - M.: Mashinostroenie, 1980, p.118-120), namely, that given the controlled parameters and the specified performance of the control for each parameter, move the input stream various types of products to control the corresponding parameter control every type of product, at its option, exclude the rejected articles of follow-up, and products deemed fit, move into the output stream of the products of parallel streams, the number of which is equal to the number of types of products.

The disadvantage of this method is that it is not possible to monitor similar products on various parameters with high performance as the control of the same products can be produced at the site on various parameters sequentially.

There is also known a method of process control (N.M. Kuznetsov, Volchkevych LI, Suchlow YG automation of production processes / Ed. by whom.Achamana, ed. 2-E. - M.: Higher school, 1978, str, 109), namely, that given the various controlled parameters of products and the specified performance of the control for each parameter form shop headstart, specify a valid upper bound volumes of production backlog for each of these settings, control products in the same sequence parameters, prevent defective products from the subsequent monitoring and control of products continue to pass control of all the specified parameters.

The known method is closest to the technical nature of the claimed and accepted as a prototype.

The disadvantage of this method is the low performance of the control, due to the fact that, given the performance of the control for each parameter and with the exception of defective products from the subsequent control equipment, carrying out the subsequent control, will be idle waiting for the products considered able-bodied, and, and the higher the level of defectiveness of the product, the more downtime, as the products move to the control sequence.

Problem to be solved is to improve the performance of the control of the same products on different parameters.

The solution of the stated problem is achieved by the fact that in the process control method is mnogoparametricheskoi control, namely, that, under specified controlled parameters of products and the specified performance of the control for each parameter set the allowable upper and lower bounds shop backlog items, move items on the control according to the specified parameters control products on these parameters, rejected product control, prevent defective products from the subsequent control of the remaining items for each parameter create interoperable Foundation for the oversight of the subsequent parameter, if exceeded acceptable limits volume production backlog, the control for this parameter cease, and when the volume of this shop backlog is not more appropriate valid lower bounds, continue testing products in this parameter, according to the invention the product control parameters for a given move in parallel, products, recognized suitable for all different combinations of the controlled parameters, create additional production capacities, set the allowable upper and lower bounds of additional interim basis, assign each product a priority proportional to the number of controlled parameters, products move to control for all subsequent parameters in accordance with this priority and exceeding all limits of volumes of these interim basis, which directly feed is controlled by this parameter products, monitoring of this parameter cease, and when the amount of at least one of these in the shop backlog is not more appropriate valid lower bounds, continue testing products by this parameter before passing the products that are recognized as valid for the tested parameters, control of all the specified parameters.

In the presence of a priori information about the level of defectiveness of products for each parameter, assign each priority parameter, proportional rejected it the flow of products, and the number of products a smaller number of parameters of the subsequent control which items should be addressed in parallel, the products move in parallel to the control according to the specified parameters in accordance with this priority.

In the absence of a priori information about the level of defectiveness of products set the confidence interval and confidence level to determine the level of defectiveness of the products on their basis to determine the volume M of the sample needed, initially set the priority for each parameter, proportional to the performance of control on this parameter, and the number of products, a smaller number of parameters of the subsequent control which products should be directed parallel is entrusted, move products in parallel to control for follow-up parameters in accordance with this priority, the control results to determine the level of defects for each parameter for each M passed control of the goods, then set the priority parameter, proportional rejected it flow products and items from the input stream and inter-operational backlog move control in parallel according to the new priority.

Conducted a search of the patent and scientific and technical documentation did not reveal technical solutions, similar to the declare, so you can consider it appropriate criteria of "novelty" and "significant differences".

The proposed method is implemented by the control system.

Let us formulate the General requirements for process control, on the basis of the proposed method is constructed implements its control system:

1. The number of controlled parameters - more than one and they are all different.

2. Testing operations are commutative.

3. Testing operations are associative.

(PP and 3 are observed in most cases of non-destructive control.)

4. Among controlled there is a certain amount of defective products.

5. The number of controlled items is large enough (larger than the number of controlled parameters).

6. Each parameter pin is airwest your device, device performance for each parameter set, constant and, in General, different. This allows independent and simultaneous operation of all devices.

7. There is a way to sort, i.e. rejected on any parameter of the product is excluded from subsequent control.

8. The transfer of controlled goods between the control devices is much less than a control time (which is achieved when their group transfer), or during the time that in the prototype, (or at the same time, commensurate with the prototype).

9. Of controlled and recognized good products are formed limited interim backlog.

Instead of individual parameters can be parameters groups if each group is controlled by one control device. Then the above applies to groups of parameters.

First, for simplicity, let us consider a system of control products for the two parameters. (Control system can be implemented in a single device with multiple different positions of control.)

An embodiment of the proposed method, the control system is illustrated by drawings.

Figure 1 shows the block diagram of the system of multivariable control products for the two parameters with traffic, the arrows indicate the direction of traffic.

Figure 2 presents the block of the diagram of the system of multivariable control products by two parameters informational links.

Figure 3 presents the block diagram of the drive 9icontrolled products (drives 91, 92identical and in this case marked with a single digit 9i).

4 shows the block diagram of the drive 11 of suitable products.

Figure 5 presents a plot of the relative performance of a/a2control of the proportion of defective items for two parameters (the ratio of the performance of the system for performance monitoring device included in the system and has the lowest performance control).

Figure 6 presents the block diagram of the control system for three different settings with traffic. The arrows indicate the direction of traffic.

Control system products by the two parameters (figure 1) contains the block 1 boot block 2 start, block 3 split the input stream, blocks 41, 42control the multiplexers 51, 52device 61, 62control blocks 71, 72processing and registration, blocks 81, 82removal of marriage, drives 91, 92controlled products, demultiplexes 101, 102the drive accepted items 11, gruzomobile and accompanying media (not shown in figure 1).

Block 1 boot and device 61, 62controls include occupancy sensors products. Block 1 boot the conditions also includes a counter (not shown).

Unit 3 split the input stream contains the module priorities and the sensor module issue items (not shown).

All the multiplexers 51, 52and demultiplexes 101, 102have the readers information set read information with accompanying media (not shown).

Accompanying media - media of any type (in particular, this may be the product itself), where it noted the fact that successful completion of any device 61, 62control.

Each drive 91, 92(figure 3) contains the sensor 12 of receipt of the products, the sensor 13 sending products (reversible) counter 14 and the module 15 definition the drive is full.

The drive 11 of suitable products (figure 4) also contains the sensor 16 of receipt of the product, the counter 17 and the module 18 to determine the drive is full.

Each module 15 (18) determination of the storage tank contains a node for setting upper and lower boundaries of the volume and the comparison circuit (not shown), to the first input of which is connected to the output node for setting upper and lower boundaries of the volume, and the second output of the counter 14 (17).

Device 61, 62control contain markers (not shown)that are installed with the possibility of interaction with accompanying media if successful, passes the Denia product monitoring device, i.e. if the product is deemed suitable for this parameter.

Unit 1 load connected gruzomobile unit 3 split the input stream (figure 1, arrows show the direction of traffic) of the first and second material, the output of which is connected by grushovtsy respectively to multiplexers 51, 52. The multiplexers 51, 52connected by grushovtsy with appropriate devices 61, 62control, the first tangible output of which is connected by grushovtsy with relevant demultiplexes 101, 102and the second input of the corresponding block 81, 82the waste removal. The first tangible outputs demultiplexes 101, 102connected by grushovtsy with the appropriate drives 91, 92controlled products, and the second - with the drive 11 of suitable products.

Drive 91connected gruzomobile with multiplexer 52the drive 92connected gruzomobile with multiplexer 51.

The first output block 1 loading (figure 2) connected to the input of unit 2 start-up, the output of which is connected to the first inputs of unit 3 split the input stream, block 41, 42control blocks 71, 72processing and registration drives 91, 92controlled products, input devices 61 , 62control and drive 11 of suitable products. The second output unit 1 load connected to the second input unit 3 split the input stream, the output of which is connected to the input of block 1 loading.

The first outputs of blocks 41, 42control connected respectively to third and fourth inputs of unit 3 split the input stream, the second outputs of blocks 41, 42control is connected to the second inputs respectively drives 92, 91controlled products. The first exit devices 61, 62control is connected to the second inputs of the respective blocks 41, 42management, second unit outputs 61, 62control is connected to the second inputs of the respective blocks 71, 72processing and registration. The output of the drive 11 of suitable products is connected to a third input of block 41, 42control.

The first outputs drives 91, 92connected respectively to the fourth inputs of block 41, 42management. The second output drive 91connected to the fifth input of the unit 42management. The second output drive 92connected to the fifth input of the unit 41management. (Unit 4 and control unit 7 processing and registration can be implemented in a single computer.)

The counting input of the counter block 1 boot I have is the entrance of block 1 download, and the output is the second output block 1 boot (not shown).

The output of the respective sensor to the availability of products is the first exit block 1 loading and the first output device 61, 62control.

The output module priorities of block 3 of division of the input stream is the output of block 3 of division of the input stream.

The first input module priorities is the first input unit 3 split the input stream, second, third and fourth, respectively second, third and fourth inputs of unit 3 (not shown).

In the drive 9i(i=1, 2) of the controlled products (figure 3) the output of the sensor 12 of receipt of the products connected to a summing input (reverse) of the counter 14, the output of which is connected to the input module 15 definition the drive is full. The output of the sensor 13 send products connected to the input of subtraction (reversible) counter 14. Output (reversible) counter 14 is the first output of the drive, and the output module 15 determine the fill level of the drive is the second output of the drive. Installation entry (reversible) counter 14 is the entrance drive 9i.

Installation the meter inlet 17 (figure 4) is the input of the drive 11 of suitable products, and the output module 18 to determine the full the drive is the output of the drive 11 of suitable products.

The system works as education is om.

For each drive 91, 92, 11 in module 14 definition the drive is full in the jobs node boundaries are the upper and drives 91, 92and lower bounds of the volume of backlog (lower bounds may be zero).

In module priorities of block 3 of division of the input stream are set priority service simultaneous requests of products. At a known level of defects in controlled settings, the priority is set a priori proportional rejected to flow with the unknown - (originally, to assess the level of defects) is proportional to the performance of control devices. After assessing the level of defects in the control priority is set aposteriori proportion rejected the stream.

In the initial state of the product missing from the system. This information comes from the presence sensor products unit 1 load to the input unit 2 start-up. Consequently, the inputs from the third to the fifth to the corresponding block 41, 42control devices control and all drives signal carrying information about the absence of products. Device 61, 62control blocks 71, 72processing and registration are in the initial state of readiness to control. Counters 14 drives 91, 92standing in the outcome of the second state, block counter 1 load counter 17 in the drive 11 of suitable products zeroed. The multiplexers 51, 52commute the first material input, output, demultiplexes 101, 102commute the material input to the first material output.

Upon receipt of the flow of goods in unit 1 downloads in the counter block 1 boot is filled in with the number received in block 1 products. Sensor availability of goods unit 1 load signal on block 2 start. Unit 2 start-up issues a command to the system startup, which is received in block 3 of division of the input stream, all the control units, processing units and the registration, control devices and drives. This device 61, 62control generates the request signal products to the second input of the corresponding block 41, 42control.

Counter block 1 boot provides information about the number of items in block 1 loading module priorities of block 3 of division of the input stream. In unit 4 control occurs periodically (before removal request signal devices device 6 control) survey of the States sequentially inputs the third, which receives the signal of the ban from the drive 11 of suitable products, the fourth, which receives the signal of the ban with appropriate drive 9 of the controlled products and then input the fifth, in which p is the disposal of the signal the availability of products with different drive 9 controlled products.

As products in storage 91, 92, 11 no, then the output of all relevant blocks of the boundary is the permission signal receiving products, and on the fourth input of the unit 41control signal showing the absence of products coming from the respective sensor to the availability of products. So from the first output of block 41, 42control on the third and fourth inputs of unit 3 split the input stream, which are respectively the second and third inputs of the module priorities, receives a request signal products.

If pings products arrive at unit 3 of division of the input stream is not at the same time, the unit 3 split the input stream throws protonotary products in order of receipt of these signals.

While signals of the query in the module priorities counting the number of these received signals and comparing this quantity with the unit 1 load number of products. If the number of products is greater than the number of requests, products are issued by the separation unit 3 input at the same time all relevant protonotary.

If the number of items in block 1 loading less than the number of requests, the product is issued in accordance with predetermined priorities.

When issuing products unit 3 division input on the eye in the accompanying media no information is logged.

Gruzomobile convey the product to the corresponding multiplexers 51, 52the readers information read the information accompanying the media that it was not monitoring device, therefore, the state of the multiplexers 51, 52does not change, and the products come to the right device 61, 62control.

The information about the goods being sent from the sensor module issuing products unit 3 split the input stream to the input of the counter block 1 boot, where the subtraction of the number of issued products and as a result, the counter will record the number of remaining items.

The monitoring device 61, 62independently from each other (possibly simultaneously) control of incoming products for the corresponding parameter.

When products are received by the control device 61, 62control remove request products with corresponding blocks 41, 42management. The request signal when it is removed the corresponding block 41, 42control corresponding input block 3 split the input stream (figure 2).

If the results of monitoring of the product recognized by the marriage, they moved grushovtsy in the appropriate blocks 81, 82the waste removal and are excluded from subsequent control.

p> At the end of the process control device 61, 62make a request to the corresponding block 41, 42management. Blocks 41,42control again poll the inputs of three, four and five, and if the signals they do not, issue a query on the product of unit 3 split the input stream, then the process of transferring products from block 1 boot on device 61, 62monitoring and control of these products is repeated. In General, the performance and1and2devices 61, 62control different (for definiteness and put1>and2), respectively, will be different and the time of receipt of the request block 3 split the input stream, which produces goods for each request regardless if you have enough items in block 1 loading.

Upon receipt of the product at any demultiplexer 101, 102the readers information read the information accompanying media on the number of traversed control devices from which the demultiplexer provide connectivity input protonotes from the respective devices 61, 62control output gruzomobile according to the following algorithm (figure 1). If the product was subjected to a single device 61(62) control the demultiplexer 101(102) ASU is actulay communication input protonotes with gruzomobile, delivering products to drive 91(92) controlled products corresponding device 61(62) control.

If the product has passed all devices 61, 62control, the demultiplexer 101, (102) communicates the input of protonotes with gruzomobile, delivering products into the drive 11 of suitable products.

If the product is qualified under this option, on the companion media the marker device 61(62) control contains information on the passage of this device 61(62) control.

Information about the results of the control device 61, 62control goes to the second input of the corresponding block 71, 72processing and registration, where it is recorded and processed according to the algorithm set: count the total number is controlled by this parameter products, the amount of waste products by this parameter and the estimated number of defects on the corresponding parameter as the ratio of the number of defective products to the total number of controlled products in this parameter. Blocks 71, 72provide information about the number controlled by this option products, the number of defective products and the level defectos and on certain media (for example, digital signage, paper and others).

Consider the system for a variety of inspection results. If both products received from block 3 of division of the input stream is rejected, then the process of obtaining products devices 61, 62from block 1 loading is repeated, as above described, and the system has the structure of a parallel control. The performance is equal to the sum of the output device 61, 62control.

If both products were considered fit on them or on the companion media is mark the passage of this device 61(62) control and they are collected by the relevant demultiplexes 101, (102and then according to the above algorithm in the appropriate drive 91(92).

Upon receipt of the product in the drive 91triggered sensor 12 of receipt of the products, information which comes to the summing input (reversible) counter 14. The counter 14 counts the number of received items and returns this information to the module 15 determine the fill level of the drive. If not achieved the desired upper limit of the volume of backlog, the state of the output module 15 is not changed and it is the enable signal. If the boundary is reached, the module 15 generates a signal of this on the fifth input of the unit is 4 2control.

Similarly, upon receipt of the product in the drive 92it receives the signal the availability of the product to the fifth input of the unit 41management. If the corresponding upper limit of the amount of backlog is not achieved (i.e. the number of items in the memory 91, 92has not reached the preset value), then on the fourth input of the corresponding block 41, 42management is the enable signal.

When receiving a request signal from block 61, (62) control the corresponding block 41, (42) control block 41, (42) management is the serial poll status of the four inputs (signal overflow with appropriate drive 91, (92) controlled products) and five (signal the availability of the product in the drive 92(91)controlled products). This ensures that the priority of service drives, proportional to the number of parameters, which are controlled products in these devices.

If there is no prohibition signal to the inputs of three and four, and the fifth input signal to the availability of products, the control unit issues a command corresponding to the input drive of controlled products, which by this command produces the product, and gruzomobile deliver the product through the multiplexer to the corresponding in trojstvo control.

If the product received from the drive controlled products, are recognized as valid, then it (or escort) after passing the monitoring device is mark the passage of control on this parameter, and it went to a corresponding demultiplexer. The sensor reading demultiplexer determines that the product had only one control device, and switches the input to the first output, so the product then goes to the appropriate drive 91, 92controlled products. Since the performance of the first control device and1control is higher than the second and2(according to paragraph 8 above), the product will get to drive 91before the product from the device 62control will drive 92. Accordingly, information about the availability of the product in the drive 91will go to the fifth input of the unit 42control earlier than in block 41you will receive information about the availability of the product in the drive 92. Therefore, when the device 62control will request details on block 42management, on the fifth input of the unit 42management will signal the availability of the product in the drive 91.

After receiving the request signal from the device 61control block 41management polls the state input, three, even the re, five and, in the absence of information about the availability of the product in the drive 92, issues a request to block 3 split the input stream.

The product of block 1 download via block 3 split the input stream and the corresponding multiplexer 51supplied to the device 61control, and the process continues until the drive 92you do not receive a product, or no signal overflow from the drive 91the fourth input of the unit 41control.

If the block 41drive 92received information about the availability of the product, the next request products unit 61control product for control will be taken from the drive 92.

Because the performance of the first device 61control more than the second 62(and products, by assumption, all qualified), the drive 91will gradually be filled by them after inspection of the products coming from unit 3 split the input stream. Since the product in the drive 91almost always, the product of the control device 62will come only from the drive 91.

When it reaches the top of the set boundaries shop backlog drive 91outputs a signal of a ban on the fourth input of the unit 41control.

This signal block 41control the termination is for the prompt products for block 3 split the input stream and stops polling the status of the fifth input, which receives information about the availability of the product in the drive 92which therefore remains empty.

Device 62control is in operation, controlling the product only from the drive 91.

After the number of items in the memory 91decreases to a predetermined lower boundary, the drive 91removes the prohibition signal from the fourth input of the unit 41control, the control unit 4 returns to the previous mode of the survey and the product again come to the control unit 3 split the input stream. The availability of a specified lower limit of the filling volume of the drives allows you not to wait for its full release, which also increases the system performance, while setting it to zero does not change the algorithm.

Thus, the system rebuilds its structure into a sequential control system.

When you reach the number of products specified edge filling the drive 11 of suitable products to a third input of block 41, 42control signal of the ban, and the system stops working until until the accumulator 11 accepted items will not be deleted controlled products.

If products are received at a control, are recognised as marriage and are excluded from subsequent control, the system is flexible Perez is rival its structure in accordance with the level of defectiveness of products for each parameter. Priority service drives proportional to the number of covered devices control products contained in them. It provides first passage control products that are recognized as valid.

Consider the case where the block 1 boot remains one product.

The product of block 3 of division of the input stream is supplied to a corresponding control device in order of receipt of requests. If requests arrive simultaneously, then, if there is information about the level of defectiveness of products for each parameter, the module priorities established in block 3 of division of the input stream, sends the product to the device control parameter, where more rejected the flow of products, which is based on the corresponding priority setting in the module priorities.

If the rate of defective products is unknown a priori, the priority device 61, 62control is assigned initially proportional to their performance.

It is then determined by known methods - asking the confidence interval and confidence level of the level detection of defects, determine the required sample size (number of products). After testing this number of products for each parameter to determine the level of defects (see, for example, N.P. Buslenko, Y is Ayder Y.A. The method of statistical tests. - M.: Fizmatgiz. 1961.)

After determining the level of defectiveness of the priority parameter (and thus the control device) is assigned proportionally rejected the argument to the stream.

For the unstable process of manufacturing the determination of the level of defects and the corresponding assignment of priorities is performed periodically after controlling for the required number of items.

The control system for three different parameters (6) and more are built similarly. Control system by three parameters contains the block 1 boot block 2 start, block 3 split the input stream, blocks 41, 42, 43control the multiplexers 51, 52, 53device 61, 62, 63control blocks 71, 72, 73processing and registration, blocks 81, 82, 83removal of marriage, drives 91, 92, 93, 912, 923, 931controlled products, demultiplexes 101, 102, 103, 1012, 1023, 1031the drive 11 of suitable products. In the drives 91, 92, 93sent items, screened only one relevant parameter is valid and recognized. This drives the first level. In the drives 912, 923, 931directed product is, the last control on the various combination of two parameters, respectively, first and second, second and third, third and first in any regardless of the order control devices. This drives the second level. Priority products drives the second level is set higher than the drives of the first level. This is achieved by the fact that when you request products control devices survey of drive control units is performed, starting from a higher, second level, and only in the absence of these products is a survey of the drives of the first level. Accordingly, the survey is made and the goods of the drive control. Control system works similar to the above two parameters. Only in this system, the problem of shortage of products while query may arise in the drives of the first level. It is solved similarly by setting priorities to control devices in proportion rejected stream (at a known level of defects on the parameters) or proportional performance (with an unknown level of defectiveness to its practical definitions) and supply drives controlled products to the highest level modules that are functionally identical to the block 3 split the input stream. Thus, nakopitelyami products to the highest level is similar to the block 1 download, combined with the block 3 split the input stream.

In the case of control by n parameters, the system is constructed similarly. The number of divisions on protonotary when issuing products for drives controlled products each level is equal to n-K, where K is the level of the drive. (When the total number of drives in the system 2n-1 the number of additional drives is 2n-n-1.)

First, let us state the performance of the control system for the two parameters in steady state operation.

Let a1and2- performance control, a b1and b2- the proportion of rejected products respectively with the first and second parameters. (Obviously, the values of b1and b2lie on the segment [0,1]). For definiteness, suppose that a1>and2. Will be considered in accordance with condition 8 that the time of the transfer of products between control devices a lot less time control.

Depending on the proportion of rejected products on the second option, there are two cases. In the first case, when

the system is rebuilt in serial, and the products come first control device with higher performance. The first control device, with reduced performance, will be completely loaded, and the second device to the control, better to be fully loaded before completing a second drive, what happens at the initial stage of operation of the system and steady state performance will be compared with the performance of the system when fully filled with the second drive (meaning the average performance of the system).

However, the performance of the system will be

In the second case, when

the system is rebuilt in series-parallel, and performance monitoring of this system will be:

When b1=b2=1 the system is reconstructed in parallel, and its performance will be:

In all cases, regardless of the level of technological process of manufacturing of products and their level of defects) method provides the maximum performance of the control.

Below is the rationale for performance monitoring of the proposed method.

First, for simplicity, consider the case of control for two different settings (there are two control devices or two control positions in this unit).

Let a1(i=1, 2) - performance monitoring of the i-th parameter (performance of the i-th control devices).

Pus is b ithe level of defectiveness of the products in the i-th parameter.

Let m1- the number of products received on the primary control on the i-th parameter per unit time, i.e. the number of items received per unit time of the separation unit of the input stream at the i-th control device during steady state operation of the system. Then the performance of the control system, i.e. the number of products is controlled in a unit of time equal to A=m1+m2. (Consider that the transportation of goods by grushovtsy or occurs during the operation of the control devices, which can always be achieved by sending articles to the control groups (e.g., tapes) in sufficient quantity to each load control device during transportation, or which takes the same time as the prototype, then it would be about equivalent to the performance of the control equipment, taking into account the transportation time to it products). Then the number of products to be excluded per unit time of the subsequent control of the i-th control device equal to biandi.

At the first control device with the second supplied per unit of time (1-b2)m2products, and on the second device from the first (1-b1)miproducts.

From the condition of full load during steady state operation have systemwarning:

deciding which relative to m1and m2and identifying system performance A=m1+m2after simple algebraic transformations we obtain:

Figure 5 presents a plot of the relative performance of the control system And/as2when a1=1,1·a2from the proportion of defective items by the two parameters (or two groups of parameters).

From the graph we see that the performance of the system that implements the proposed method, higher performance device control with minimal performance, the performance-limiting control of the prototype, even if b2=0.

Set forth easily generalized to the case of multiple controlled parameters.

The situation of shortage of products while simultaneously query multiple control units can occur and storage of controlled products, which are supplied with the same blocks of priorities.

Determine system performance in the General case for n controlled parameters.

For definiteness, we enumerate the monitoring device in the descending order of their performance, i.e. we assume aj+1≤aj, j=1,2...n-1, (which you can do because of commutativity).

In the first case, when for all j

and the system rebuilt in serial, the performance will be determined by the device with minimal performance'an. Indeed, let out of the unit load per unit time is supplied to the control And parts (which is the performance of the control system). After passing the first device is discarded Ab1therefore, the second control device per unit of time will receive A(1-b1products, etc. From the condition that the last device is fully loaded, we obtain the equation:

from which define desired performance:

We believe that when n=1,then A1=a1.

In the second case, we obtain:

Indeed, the system performance depends on the number of q1parts, tested on all parameters and input into the reservoir of good parts per unit time and the number of q2rejected by all parameters of parts per unit time (flow rate of rejected products):

The number of scanned and entered into the drive fit of parts per unit time is:

The number of q2rejected by all parameters of parts per unit time in the steady state at full load control devices will be:

Substituting (13) and (14) in (12) and solving the equation for A2obtained (11).

When there are n control settings after each monitoring device moving products on subsequent devices is also in parallel, just as it comes from the separation unit input stream.

When n>2 there is a third case, when for some groups of parameters, condition (8), and for part - no. In this case, the portion of the device is fully loaded, and some that do not fully, then the system performance is in the range:

Indeed, consider, for example, the case when the condition (8) is not met for the first k parameters and, respectively, the first k devices work consistently, then this group can be considered as one unit performance

Then the value of the rejected stream this generic device will be equal to the difference between the performance of this generic device and the number of good parts that have passed all the monitoring device of this group:

For other devices, the condition (8) holds. Then the system performance will be:

The numerator determines the amount of the rejected stream.

When k=1 we have the expression (11) for performance And2the second case, when k=n, assuming that

we obtain the expression (10) for the performance of A1system in the first case, where A1≤And3≤And2.

In this case the system might be the case (at the start and at the end of its work after using up parts of the unit load, which occurs always)when products m0the drive is less than that of the control device n to which the product must be received in parallel by their simultaneous request. Note that the performance of the control system is proportional to the flow rate q2rejected parts.

The lack of products on the i-th control device thus equivalent to its downtime, i.e. formally andi=0.

From (11) it is clear that when the number of products m0<n maximum thread will be rejected, if in (14) to leave the greatest components. Therefore, in the presence of a priori information about the level of defectiveness of products for each parameter to obtain maximum productivity and system in this case, you can assign a priority to each parameter, proportional rejected it flow andibiand the product is distribute from the shop backlog in accordance with this priority by the first parameter.

If the level of defectiveness is a priori unknown, we assume equal levels of defects on all controllable parameters. Then rejected the stream, as follows from (18), will be determined by the performance of the control, so in this case, the priority parameters (and, accordingly, devices of control) is set proportional to their performance to determine the level of defects in all parameters.

The proposed method is adaptive with respect to the level of defectiveness of controlled products and can provide full load control equipment.

The system has two types of priorities: the first relates to the quality of a particular product, generally proportional him (the higher the quality of the product, the higher the priority) and always works, and the second is associated with the quality-controlled set of products (and a very different attitude than the quality of many products for a certain option with equal performance control, the higher the priority of this option) and only works in a conflict situation of simultaneous requests with a deficit of products.

Thus, proposed is the range of the process control method of control allows the control of the same products with greater performance, than analogues, and the testing efficiency can exceed the performance of systems built from the same control device, as in the prototype, several times.

This method of control allows to download power control equipment and to achieve the highest possible performance monitoring system data for the member devices of the control.

The proposed method provides maximum performance not only for control systems, but also for any system satisfying the above conditions 1-9.

1. The method of process control multivariable control, namely, that under specified controlled parameters of products and the specified performance of the control for each parameter set the allowable upper and lower bounds shop backlog items, move items on the control according to the specified parameters control products on these parameters, rejected product control, prevent defective products from the subsequent control of the remaining items for each parameter create interoperable Foundation for the oversight of the subsequent parameter, if exceeded acceptable limits volume production touched a control on this parameter cease, and when the volume of this malper the operating reserve not more appropriate valid lower bounds continue testing products on this parameter, wherein the product control parameters for a given move in parallel, products, recognized suitable for all different combinations of the controlled parameters, create additional production capacities, set the allowable upper and lower bounds of additional interim basis, assign each product a priority proportional to the number of controlled parameters, products move to control for all subsequent parameters in accordance with this priority, and exceeding all limits of volumes of these shop reserves that directly feed is controlled by this parameter products, monitoring of this parameter cease, and when the amount of at least one of these in the shop nevertheless this is not more appropriate valid lower bounds continue testing products by this parameter before passing the products that are recognized as valid for the tested parameters, control of all the specified parameters.

2. The method according to claim 1, characterized in that in the presence of a priori information about the level of defectiveness of products for each parameter assigned to each priority parameter, proportional rejected it the flow of products, and the number of products a smaller number of parameters after the ith control, which products should be addressed in parallel, the products move in parallel to the control according to the specified parameters in accordance with this priority.

3. The method according to claim 1, characterized in that in the absence of a priori information about the level of defectiveness of products set the confidence interval and confidence level to determine the level of defectiveness of the products on their basis to determine the volume M of the sample needed, initially set the priority for each parameter, proportional to the performance of control on this parameter, and the number of products a smaller number of parameters of the subsequent control which items should be addressed in parallel, the products move in parallel to control the following parameters in accordance with this priority, the control results to determine the level of defects for each parameter for each M passed control of the goods, then assign each parameter the priority is proportional rejected it flow products, and products for the control mix in parallel in accordance with the new priority.



 

Same patents:

FIELD: non-destructive control.

SUBSTANCE: method includes determining critical size χcr of defects in operation mode and allowed size [χ]d.o. of defects. Control results are presented in form of bar graph in coordinates (Ndet,χ), where Ndet - number of detected defects, χ - characteristic size of defect. Probability of defect detection Ppd is determined, as well as source defectiveness Nsc=frequency(χ), remaining defectiveness Nrm=φ(χ) as difference between Nsc and Ndet. Remaining defectiveness is divided by trustworthy portion χ≤χd and probability portion χ>χd, where χd - size of defects at limit between trustworthy and probable portions. On basis of probable portion of remaining defectiveness probability of existence of defects is determined, sizes of which exceed χcr and defects, sizes of which exceed [χ]d.o.. Safety of product is determined as probability of absence of defects, sizes of which exceed χcr, and reliability of product is determined as probability of absence of defects, size of which exceed [χ]d.o..

EFFECT: higher efficiency.

9 cl, 5 dwg

FIELD: technical diagnostics.

SUBSTANCE: method includes, for each set of input test signals, forming of prior matching response signals for intermediate points of controlled device. Received response signals at outputs of product are compared to parameters of standard response signals and level of their match is determined, in case of mismatches broken branch of functional circuit is determined and diagnostics is repeated by substituting all formed combinations of input signals, after that diagnostics of erratic portions is started.

EFFECT: simplified method.

3 dwg

FIELD: measuring equipment.

SUBSTANCE: device has block for forming control and stimulation signals, block for forming standard signals, multiplication blocks, frequency transformer, phase rotator, commutator, frequencies grid generator, integrators, blocks for square involution, adder, normalization block, key, analog-digital converter, comparison circuits, memory blocks, registers, information output block, interval estimation block (for setting lower and upper limits of trust range for each measured value of mutual difference coefficient of distorted and standard signals) and block for analysis of number of support values of mutual difference coefficient (to exclude from further processing results of measurements, for which within limits of trust interval number of support values of coefficient exceeds allowed limit).

EFFECT: higher precision.

2 cl, 2 dwg

FIELD: technical systems diagnostics.

SUBSTANCE: method includes forming an equivalent standard model of connections, gaps of which include standard models of composition parts of current type of products, combinations of input signals are set in certain order, parameters of response on outputs of standard model of diagnosed product are determined as well as in characteristic intermediate points between standard models of composition parts of product, values of response parameters together with parameters of test input signals are recorded in database, after which process is repeated until fully searching all states of standard model.

EFFECT: possible forming of tests in absence of standard samples of control subject for different classes of products in different areas.

4 dwg

FIELD: automatic control.

SUBSTANCE: device has first and second analog-digital converters, first and second coefficients forming blocks, first and second multiplication blocks, counter, first and second integrator, control effect forming device, division block, buffer and registering block, while coefficients forming blocks are made in form of digital filters and all remaining blocks of device are made digital.

EFFECT: higher precision, higher resistance to interference.

1 dwg

FIELD: automated control and diagnostics systems.

SUBSTANCE: first variant of complex includes control computer, mating block, commutator, local data exchange main, tests forming block, logical analyzer, signature analyzer, synchronization block, digital oscillographs block, special form signals programmed generators block, programmed power-sources block. Second variant of complex additionally includes block for forming high-frequency test signals and block for measuring high-frequency signals.

EFFECT: broader functional capabilities, higher efficiency, higher reliability.

2 cl, 2 dwg

FIELD: measuring equipment.

SUBSTANCE: as a source of standard signal not separate generator of test signal according to known code structure is used, but a component of modem, to provide for substantial simplification of process under unfavorable conditions.

EFFECT: higher efficiency.

1 dwg

FIELD: instrumentation engineering; serviceability check of multichannel communication systems.

SUBSTANCE: proposed equipment includes personal computer, multiplexing switch, circuit checkup unit, control unit, multichannel comparison unit, virtual standard, switching unit, output signal shaper, multiplexer, and normalizing unit that has voltage meter and circuit meter.

EFFECT: enlarged functional capabilities of device.

3 cl, 1 dwg

FIELD: mechanical engineering.

SUBSTANCE: method comprises determining variations of the parameter during acceleration and deceleration of the actuator. The device comprises generator and OR-NOT unit, the inputs of which are connected with the outputs of the relay. The output of the relay is connected with the input of the generator.

EFFECT: enhanced accuracy of the method and simplified device.

3 dwg

FIELD: electric measurements, applicable in check-up of tram and trolleybus electric apparatuses in the process of manufacture and in service.

SUBSTANCE: current in the current source is fed to the current winding of the current relay from the rectifier via a key, choke, shunt. The device uses a pulse-width modulator that controls the keys, slowly varying voltage is applied to the modulating input of the pulse-width modulator that is preliminarily modulated by the rectifier ripple voltage. Besides, use is made of a sample-release circuit of operate (release) currents and voltages. The signals from these circuits are fed to indicators via analog-to-digital converters.

EFFECT: reduced error of determination of operate and release current and voltage relays, enhanced capacity of check-up in the device due to reduced ripples of the source of smoothly varying current.

2 cl, 4 dwg

FIELD: mining industry; methods of reprocessing of potassium ores.

SUBSTANCE: the invention is pertaining to the different production processes, in particular to the methods of materials sorting by means of devices put in action automatically as a result of measuring of their radioactivity and may be used for reprocessing potassium ores. The technical result is a decreased share of a rock salt in reprocessed potassium ores. Before lifting the ore up to the surface exercise its radiometric assorting, for what the mined rock mass is fed by a conveyer into the zone of gauging, where by the radiometric instrumentation measure the value of a gamma radiation and according to it estimate concentration in it of potassium chloride and in the results of the measurements form the signals making control of the executive mechanisms operation. The potassium ore is delivered into the all-mine hopper and the rock salt with the share of potassium chloride of no more than 5 % with the help of the plough pushers deliver to the auxiliary hopper. Further the ore from the all-mine hopper lift up onto the surface for the subsequent reprocessing, and the rock salt received as a result of sorting from the auxiliary hopper send to fill the waste stopings.

EFFECT: the invention ensures a decreased share of a rock salt in the reprocessed potassium ores.

FIELD: woodworking industry; production of multilayer wood materials, plywood or layered materials.

SUBSTANCE: the invention is pertaining to the field of woodworking industry, in particular, to a method of increasing strength and-or decreasing its deviations in the multilayered wood materials, plywood and the similar wood materials. The method includes measuring of the density (ρ) of the dry substance of the wood veneer sheets by means of a high-frequency electromagnetic resonance and additionally - the analysis of uniformity and-or a fibrous structure of the indicated sheets using darkening (R) their surfaces. In the case when a sheet of the wood veneer contains some number of the local first areas, which are more dark than the main darkening of the wood veneer sheet surface, such sheet has its own calculated density (ρc) of the dry substance set on the more low level as compared with its originally measured value (ρm) of the dry substance. On the other hand, if the wood veneer sheet has essentially homogeneous darkening, for this sheet they estimate the longitudinal and transversal distribution of its density of the dry substance. If these parameters are essentially uniform, then for the process of sorting the calculated density (ρc) of the dry substance of the indicated wood veneer sheet is set higher, than its originally measured value (ρm). the wood veneer sheets assort On the basis of the indicated calculated dry substance densities the wood veneer sheets are assorted at least into two different categories of density. In the first such category (A) the density of the dry substance is higher, than in the second category (B). The wood veneer sheets are laid face to face for forming a laminated wood, plywood or any other laminated material. At that, the wood veneer sheets referred to the first and the second categories of density serve accordingly as the surface sheets and the middle sheets.

EFFECT: the invention ensures an increase of strength and/or a decrease of its deviation values of the dry substance in the multilayered wood materials, plywood and the similar wood materials.

21 cl, 8 dwg

FIELD: woodworking industry; production of multilayer wood materials, plywood or layered materials.

SUBSTANCE: the invention is pertaining to the field of woodworking industry, in particular, to a method of increasing strength and-or decreasing its deviations in the multilayered wood materials, plywood and the similar wood materials. The method includes measuring of the density (ρ) of the dry substance of the wood veneer sheets by means of a high-frequency electromagnetic resonance and additionally - the analysis of uniformity and-or a fibrous structure of the indicated sheets using darkening (R) their surfaces. In the case when a sheet of the wood veneer contains some number of the local first areas, which are more dark than the main darkening of the wood veneer sheet surface, such sheet has its own calculated density (ρc) of the dry substance set on the more low level as compared with its originally measured value (ρm) of the dry substance. On the other hand, if the wood veneer sheet has essentially homogeneous darkening, for this sheet they estimate the longitudinal and transversal distribution of its density of the dry substance. If these parameters are essentially uniform, then for the process of sorting the calculated density (ρc) of the dry substance of the indicated wood veneer sheet is set higher, than its originally measured value (ρm). the wood veneer sheets assort On the basis of the indicated calculated dry substance densities the wood veneer sheets are assorted at least into two different categories of density. In the first such category (A) the density of the dry substance is higher, than in the second category (B). The wood veneer sheets are laid face to face for forming a laminated wood, plywood or any other laminated material. At that, the wood veneer sheets referred to the first and the second categories of density serve accordingly as the surface sheets and the middle sheets.

EFFECT: the invention ensures an increase of strength and/or a decrease of its deviation values of the dry substance in the multilayered wood materials, plywood and the similar wood materials.

21 cl, 8 dwg

FIELD: atomic industry.

SUBSTANCE: proposed line is provided with computer-aided system for contactless control of flaw depth and profile on surface of fuel element can and on end parts including sorting-out device that functions to reject faulty fuel elements. This line is characterized in high capacity and reduced labor consumption.

EFFECT: enlarged functional capabilities, improved quality of fuel elements.

1 cl, 2 dwg

FIELD: minerals dressing.

SUBSTANCE: the offered inventions concern to dressing of minerals, in particular, to dressing of a ground mineral material. The technical result of the inventions is improved selectivity of separation of a source material by a choice of efficient way of separation and elimination of an effect of noises of a channel of registration and instability of the excitation system operation; improved automatic adjustment of the registration and excitation systems, reduction of an amount of used hardware and the time necessary for performance of the prestarting inspection and also provision of the automatic prestarting and periodic inspection and an increase of its reliability. For this purpose the separator contains means of delivery and transportation of the source material in a zone of inspection; a source of an exciting radiation; a photo-receiving device, and means of treatment of a signal of the luminescence including an analog-digital converter (ADC), a unit of the random-access memory (RAM), a register of a separation threshold and a microprocessor. In addition the separator is supplied with a register of delay and a synchronizer, the first output of which is connected to the input of the analog-digital converter start; the second output is connected to the input of the RAM; and its third output - with the input of the record of the microprocessor. The reading inputs of the random-access memory, the register of a threshold and the register of delay are connected accordingly to the first, second and third outputs of the microprocessor. The method of control over operation of the separator is based on a periodic use of its indicators in absence of a separated material for registration of intensity of their luminescence. In the capacity of an indicator they choose the air filling the volume of the separator, in the capacity of the way of separation - the normalized autocorrelation function (NACF) of a luminescence signal. At that they normalize the value of the NACF signal of the luminescence by its division by the result of integration of a square of a registered signal of a luminescence. Determine a threshold of separation equal to a threshold set at operation in a mode of separation. The value of the parameter of separation they choose so, that the value of NACF at the chosen value of the parameter exceeded the threshold.

EFFECT: the invention ensures improved selectivity of the source minerals separation, elimination of operational noises of the registration and other systems, automatic adjustment of the systems, reduction of hardware amount and time for preparation, increased reliability.

8 cl, 3 dwg

FIELD: pulp and paper industry.

SUBSTANCE: the invention presents a method of extraction of a reaction wood and-or normal wood from a nonstandard large wood chips and is intended for use in a pulp and paper industry. The invention provides for reduction of the nonstandard large wood chips to small-sized chips, their exsiccation with following mixture with water. Then the small-sized wood chips containing high density of extractive substances and having a high specific weight are settling. The settled small-sized wood chips are extracted for excretion of valuable extractive substances, in particular, lignites. The more light-weight small-sized chips floated on water surface are removed to return the normal timber for production of a paper stuff. The invention ensures a simple and economically efficient method of concentration of a gnarled timber material and-or normal timber out of a nonstandard large-scale wood chips. At that the process of concentration is so effective, that makes it economically expedient to recover the extractive substances from it.

EFFECT: the invention ensures a simple and economically efficient concentration of a gnarled and normal timber material out of a nonstandard large-scale wood chips.

8 cl, 1 dwg, 1 tbl, 3 ex

Seed sorting method // 2245198

FIELD: agriculture.

SUBSTANCE: method involves determining coordinates of subsequent centers of inertia by coordinate axes X and Y, which are calculated by 3 subsequent points of contour; determining belonging thereof to multiplicity of coordinates of boundary points of object projection; counting centers of inertia not belonging to said multiplicity of coordinates.

EFFECT: increased precision in sorting of seed.

3 dwg

FIELD: mining industry; diamonds mining.

SUBSTANCE: the invention is pertinent to mining industry, in particular, to diamonds mining. The technical result of the invention is increase of electrical safety of a separator and reliability of its operation with simultaneous decrease of weight and dimensions of a power supply source for an X-ray tube. The separator contains a device of loading of a feed stock, a chute for delivery of the feed stock in a zone of detection of a required product, an X-ray tube connected to a source of its power supply, a photomultiplier, a block of control and data processing, a device for separation of a target product and a device for separate collection of the target and the end products. The source of power supply for the X-ray tube contains a transducer of mains voltage into low-voltage high-frequency voltage, a high-voltage transformer and a voltage multiplier. At that the high-voltage transformer and the voltage multiplier and also the X-ray tube are placed in a hermetic body filled in with a high-voltage insulating substance. One wall of the body has an opening, in which there is a fixed anode of the X-ray tube, which window for pass of the X-rays protrudes beyond the limits of the body.

EFFECT: the invention ensures electrical safety of a separator and reliability of its operation with simultaneous decrease of weight and dimensions of a power supply source for an X-ray tube.

1 dwg

FIELD: mining industry; diamonds mining.

SUBSTANCE: the invention is pertinent to mining industry, in particular, to diamonds mining. The technical result of the invention is increase of electrical safety of a separator and reliability of its operation with simultaneous decrease of weight and dimensions of a power supply source for an X-ray tube. The separator contains a device of loading of a feed stock, a chute for delivery of the feed stock in a zone of detection of a required product, an X-ray tube connected to a source of its power supply, a photomultiplier, a block of control and data processing, a device for separation of a target product and a device for separate collection of the target and the end products. The source of power supply for the X-ray tube contains a transducer of mains voltage into low-voltage high-frequency voltage, a high-voltage transformer and a voltage multiplier. At that the high-voltage transformer and the voltage multiplier and also the X-ray tube are placed in a hermetic body filled in with a high-voltage insulating substance. One wall of the body has an opening, in which there is a fixed anode of the X-ray tube, which window for pass of the X-rays protrudes beyond the limits of the body.

EFFECT: the invention ensures electrical safety of a separator and reliability of its operation with simultaneous decrease of weight and dimensions of a power supply source for an X-ray tube.

1 dwg

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