Method to search for faulty block in continuous dynamic system. RU patent 2486568.
 Switching device / 2485679In the switching device with "-" and "+" feed bars and n of single-type reserved relay cells consisting of four relays and four isolation diodes, the first, second and third switchable "+" feed bars, the fourth switchable "+" feed bar is introduced with four remote switches with two normally closed contacts, five current sensors, controller. The secondary outputs of windings in each cell are connected respectively to the first, second, third and fourth switchable "+" feed bar; the first, second, third and fourth current sensor is installed respectively at first, second, third and fourth switchable "+" feed bar through which the first normally closed contacts of the first, second, third and fourth remote switch is connected with common "+" feed bar while the fifth sensor is installed at switchable "-" feed bar. Outputs of current sensors are connected to data inputs of the controller which signal inputs trough the second normally closed contacts respectively of the first, second, third and fourth remote switch are connected to the common signal input of the controller. |
 Apparatus for simulating multichannel converters / 2485583Apparatus has a synchronisation unit 1, an integrated unit 2, a switch 3, units for controlling and linearising transfer characteristics of multichannel converters 4, counters for counting the number of times a fault detection subunit 5 is switched, a control unit 6, memory units 7 and 8. The output of the synchronisation unit is connected to the input of an interfacing unit, and a multidimensional sequence generator is in form of a multichannel device of a matrix structure with feedback, and the data output of the interfacing unit fully conforms to data connections, and its data output is connected to the input of the switch. |
 Estimating parameters of control over engineering process in preset displacement segments / 2483340Method of defining parameter setimate inherent in segment related with engineering process circuit of control over operation of control devices, say, valves. It comprises generating signal data corresponding to signal from engineering process control circuit, storing said data, dividing it into segments of signals, and executing statistic analysis at the first segment of data segments selected from said data segments to generate first estimate of parameters inherent in said segment. |
 Method of designing computational process of testing equipment / 2480807Diagnostic tests are created when testing electronic devices. By executing a test, the computational testing process is realised and data packets are generated in an input/output device. The input/output device generates signals at outputs; the control equipment performs display and control of the computational process. The computational process is executed by the control equipment, and specifically generates diagnostic tests, executes the computational testing process and sends data packets to the input/output device by transit through a computational unit having software which realises communication between the control equipment and the input/output device. Information from the control equipment is recorded in the input/output device by the control equipment generating a packet in dashboard interface protocol format with an information recording feature, from which F packets are generated in highway interface protocol format, which are transmitted to the computational unit which, upon receiving the F packets, generates a packet in dashboard interface protocol format and sends said packet to the input/output device, thereby recording information. |
 Method for preliminary assessment of quality of diagnostic tests / 2475821Disclosed is a method for preliminary assessment of quality of diagnostic tests, consisting in that, based on the description of internal parts of the diagnosed article, an equivalent standard model of connections is formed; for the obtained standard model of the diagnosed article, combinations of input test signals are formed; for each combination of input test signals, parameters of combinations of output signals are determined, wherein at the inputs of the obtained standard model of the diagnosed article, corresponding combinations of input signals are given in a corresponding sequence given in the assessed diagnostic test; for each combination of given input signals, except the first, parameters of combinations of response signals at the outputs of the standard model of the diagnosed article and in characteristic intermediate points between standard models of component parts of the article are determined and, by comparing response signals obtained for the previous combination of given input signals, change in values of response signals is determined; preliminary efficiency of the diagnostic test is calculated; a preliminary decision on sufficient quality of the assessed diagnostic test is made, as a result of which the assessed diagnostic test is sent for refinement or for experimental checking. |
 System for control of at least one drive of turbojet engine thrust reverser hood / 2475801According to the invention, the control system contains at least one hood drive (actuated by at least one electric motor), electric motor and drive controls, an electric circuit including several electric components, multiple gauges intended for measurement of, respectively, the characteristic value of the electric circuit electric component or group of electric components, fault detectors intended to detect a fault at the electric circuit electric component level when the measured characteristic value pertaining to the component concerned exceeds the preset value of falls within a certain preset range of values. |
 Automated test and control equipment / 2474861Invention relates to automated test and control equipment and can be used as apparatus for checking operating capacity of multichannel communication systems and apparatus for controlling air-launched weapons of aircraft and their component parts during preflight preparation of the aircraft. The automated test and control equipment includes: a multichannel comparator unit, a virtual reference, a normalisation unit, a multiplexer, a control object, a switch, an output signal conditioner, a control unit, a multichannel comparator unit, a storage unit for reference sets, a storage unit for control results and an operability indicator. |
 Method to determine margins of stability of steering gear and device for its implementation / 2474829First a logarithmic frequency characteristic is taken in a section of a circuit of an electromechanical and power part of a drive by means of supply of a harmonic signal to its inlet, for instance, from an analyser of frequency characteristics, and then a zero signal is set to the gear inlet, an outlet link of the gear is loaded with a harmonic force, for instance, with a loader, to the inlet of which a harmonic signal is sent from the second analyser of frequency characteristics, and the logarithmic frequency characteristic is taken in the electric part of the control system. Using the sum of logarithmic frequency characteristics, they produce a logarithmic frequency characteristic of an open circuit of a drive, and on its basis they determine margins of gear stability by amplitude and phase. Also a device is proposed to determine margins of steering gear stability comprising two analysers of frequency characteristics, of the loader and the gear. |
 Method and apparatus for providing data interface between equipment for temporary monitoring and apparatus for gathering diagnostic data / 2473950Channel (500) is configured and arranged to be rigidly mounted (401) to equipment (100) meant for temporary monitoring. At least one element (800) for connecting with a sensor is movably gripped (402) inside this channel and a sensor assembly (1000) (comprising a plurality of photosensitive receptors (1001) which are arranged in form of a structure which corresponds to signal lights which make up part of the monitored equipment) is pressed (404) to the element for connecting with the sensor by a fixation element (1200) so as to retain the sensor assembly in place with respect to the monitored equipment. Owing to this approach, the sensor assembly (in combination with the element for connecting with the sensor) can be moved (403) along the channel to a selected position with respect to at least one of the signal lights and then retained in that selected position by the fixation element. |
 Method of finding faulty units in discrete dynamic system / 2473949Reaction of a good, time-discrete system is recorded first; integral estimates of output signals of the discrete system are determined; the number of analysed single and multiple defects of units is recorded; integral estimates of signals of the model for each control point are determined; deviations of integral estimates of signals of the discrete model are determined; standardised values of deviations of integral estimates of signals of the discrete model are determined; the system with nominal characteristics is replaced with the controlled system; an analogue test signal is transmitted to the input of the system; integral estimates of signals of the controlled discrete signals are determined for control points for the discrete integral transformation parameter; deviations of the integral estimates of signals of the controlled discrete system are determined for control points from the nominal values; standardised values of deviations of integral estimates of signals of the controlled discrete system are determined from the ratio; diagnostic features are determined from the ratio; the index number of the single defect of the unit or a combination of defects of units is determined from the maximum value of the diagnostic feature. |
 Method for determination of failed transducer in excess system / 2244954The method is based on a periodic check-up of relation between the measured parameters of motion characterizing the correct operation of the transducers, fixation of the moment of failure of the relation, comparison of the readings of the transducers at this moment and at the moment preceding the moment of disturbance of the relation, and determination of the failed transducer by the results of the comparison. |
 Method for estimating trustworhiness of tolerance parameter control on basis of measurements results / 2246744Method includes setting tolerance for controlled parameter, measuring physical value, associated with said controlled parameter, with numeric characteristic of its value, then measured value is compared to its tolerated values (tolerances for controlled parameter), and decision concerning level of match of measurement results to tolerances for parameter is taken, when determining tolerance for controlled parameter an affiliation function is set for phrase "parameter on basis of measurements in tolerance", and during taking of decision trustworthiness of phrase is evaluated, expressed in non-precise measure, as value of affiliation function, matching value of measured parameter. |
 Automated monitoring system / 2248028System includes control unit, unit for calling testing programs, coupling unit, measuring unit, test stimulation unit, power sources, unit for distributing signals, memory unit, N matching units, N testing program units. Each testing-program unit has evaluation circuit and two memory devices. |
 Device for check-up of tram and trolleybus electric apparatuses / 2248582Current 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. |
 Method and device for positioning actuator / 2250485Method 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. |
 Computer-based instrumentation / 2250565Proposed 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. |
 Device for controlling quality of communication line of data transfer channel / 2251723As 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. |
 Automated control and diagnostic complex (variants) / 2257604First 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. |
 Digital identifier of accumulators charge parameters / 2258952Device 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. |
 Method for forming diagnostical tests / 2261471Method 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. |
FIELD: information technologies.
SUBSTANCE: previously a reaction of a knowingly good system is registered in the interval at reference points, and integral estimates of output signals of the system are determined repeatedly (simultaneously) for integration parameter values. For this purpose at the moment of test signal supply to the inlet of the system with rated characteristics, simultaneously integration of control system signals is started for parameters of integration in each of the reference points with weights, by supplying of control system signals to the first inlets of the multiplication blocks. Exponential signals for integration blocks are supplied to the second inlets of the multiplication blocks. Output signals of the multiplication blocks are supplied to the inputs of the integration blocks. Integration is completed at the moment of time. Estimates of output signals produced as a result of integration are registered, the number of the system blocks is fixed, elements of topological links of each block within the discrete system for each reference point are determined, elements are determined from many values {-1,0,1}, the value - -1 is defined, if the sign of signal transfer from the output of the i block to the j reference point is negative. The value 0 is determined, if signal transfer from the output of the i block to the j reference point is not available, the value 1 is determined, if the sign of signal transfer from the output of the i block to the j reference point is positive. Then the rated values of the vector of topological links for each block are defined, the system with rated characteristics is replaced with the controlled one. An identical test signal is supplied to the inlet of the system, integral estimates are determined for signals of the controlled system for reference points and for parameters of integration. Deviations of integral estimates of controlled system signals are determined for reference points and parameters of integration from rated values. Rated values of deviations of integral estimates of controlled system signals are determined for parameters of integration, diagnostic criteria are determined with parameters of integration, by the minimum value of the diagnostic criterion, a serial number of a faulty block is determined.
EFFECT: improved noise immunity of the method for diagnostics of continuous systems of automatic control by improvement of defects observability.
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The invention relates to the field of control and diagnostics of automatic control systems and their elements.
There is a method to find the defective unit in dynamical system (Patent №2439648 from 10.01.2012 the application №2010142159/08(060530), MCI 6 G05B 23/02, 2012), based on multiple integration of the output signal block with weights
e - α l t, where a l is a real constant, l - number of constants.
The disadvantage of this method is that it uses several models with some sample deviations of the parameters of the transfer of the functions of the units.
The closest technical solution (prototype) is a way to find the defective unit in continuous dynamic system (Patent №2439647 from 10.01.2012 the application №2011100409/08(000540), MCI 6 G05B 23/02, 2012).
The disadvantage of this method is that it provides detection of defects with low , that is, has a low noise immunity.
Technical task, the solution of which was given invention is the improvement of noise immunity of the method of diagnosis of continuous systems of automatic control by improving the visibility of defects. This is achieved by applying multiple calculations of the integral assessments dynamic characteristics for several different values of the parameter of integration α 1 , a 2 ...α n .
The task is achieved by the fact that pre-register reaction known good system f j (t), j=1, 2, ..., k in the interval t belongs to the interval[0,T K ] k checkpoints and repeatedly define (simultaneously) integral estimates of the output signal F j (equal to l ), j=1, ..., k; l=1, ..., n for the n parameter values of integration is equal to l , for which at the moment of the test signal to the system input rating simultaneously begin integrating signal system control for n parameters of integration in each of the k checkpoint with weights
e - α l tby filing on the input k·n block multiplication of the signals control system, on the second inputs blocks multiplication serves exponential signals
e - α l tfor n blocks of integration, output signals k·n block multiplication serves on inputs k·n blocks of integration, the integration is completed in time T to , received as a result of integrated assessment of the output signal F j (equal to l ), j=1, ..., k; l=1, ..., n register, register the number m of system units, define elements topological relationships of each block, which is part of the system for each control point P ji , j=1, 2, ..., k; i=1, 2, ..., m, P elements ji define a set of values {-1,0,1}, a value of -1 to determine if the transmission of the signal from the output of the i-th block to the j-th checkpoint negative, a value of 0 determine if the transmission of the signal from the output of the i-th block to the j-th checkpoint is missing, a value of 1 determine if a signal from the output of the i-th block to the j-th checkpoint positive. Then determine the normalized values of the vector topological relationships for each block from the relation
P ^ j i P j i Σ r = 1 k P r i 2 , ( 1 )replace the system of rating controlled, the system input serves a similar test signal x(t), define the integral estimates of signals of the controlled system F j (equal to l ), j=1, ..., k; l=1, ..., n for k checkpoints and for n parameters of integration is equal to l , determine the deviations integrated assessments signals controlled system for k checkpoint and n parameters of integration from the nominal values
F j (equal to l )=F j (equal to l )-F j (equal to l ), j=1, ..., k; l=1, ..., n,
define the normalized values of integral estimates of signals of the controlled system for n parameters of integration of the ratio of
Δ F ^ j ( α l ) = Δ F j ( α l ) Σ r = 1 k Δ F r 2 ( α l ) , ( 2 )determine the diagnostic characteristics of the n parameters integration of the ratio of
J i = 1 n Σ l = 1 n { 1 - [ Σ j = 1 k P ^ j i Buna Δ F ^ j ( α l ) ] 2 } , i = 1, ... , m ( 3 )the minimum values of diagnostic character determine the serial number of the defective unit.
Thus, the proposed method to find the defective unit consists of the following operations.
1. As dynamic systems consider a system consisting of randomly United dynamic blocks, the numbers of blocks m.
2. The pre-determined time control T K = T PP , where T PP - transition time system. Transition time estimate for nominal values of the parameters of the dynamic system.
3. Define n parameters are multiples of 5/T k multiple signal integration.
4. Record the number of control points k.
5. Pre-determine the elements of a topological relationships of each block, which is part of the system for each control point P ji , j=1, 2, ..., k; i=1, 2, ..., m, P elements ji define a set of values {-1,0,1}, a value of -1 to determine if a signal from the exit i-th block to the j-th checkpoint is negative, the value 0 determine if the transmission of the signal from the output of the i-th block to the j-th checkpoint is missing, a value of 1 determine if a signal from the output of the i-th block to the j-th checkpoint positive.
6. Determine the normalized values of the elements of the vector topological relationships for each unit of the ratio of
P ^ j i P j i Σ r = 1 k P r i 2 .7. Serves test signal x(t) (single step, linearly increasing, rectangular pulse etc. for entrance control systems with nominal characteristics. Major restrictions on the type of input test the impact of the proposed method does not.
8. Record the response of the system f j (t), j=1, 2, ..., k in the interval t belongs to the interval[0,T K ] k checkpoints and define the integral estimates of the output signal F j (equal to l ), j=1, ..., k; l=1, ..., n of the system. To do this, at the time of filing of the test signal at the input of the control system rating simultaneously begin integrating (n parameters equal to l ) signals management systems in each of the k checkpoint with weights
e - α l twhat control signals serves on the input k·n block multiplication on the second inputs blocks multiplication serves exponential signals
e - α l toutput signals k·n block multiplication serves on inputs k·n blocks of integration, the integration is completed in time T to , received as a result of integrated assessment of the output signal F j (equal to l ), j=1, ..., k; l=1, ..., n register.
9. Replace the system of rating controlled. The system input serves a similar test signal x(t).
10. Define integral estimates of signals of the controlled system for k checkpoint and n parameters of integration F j (equal to l ), j=1, ..., k; l=1, ..., n, realizing operations described in clause 8 with respect to the controlled system.
11. Define deviations integrated assessments signals controlled system for k checkpoint and n parameters of integration from the nominal values
F j (equal to l )=F j (equal to l )-F j (equal to l ), j=1, ..., k; l=1, ..., n.
12. Calculate the normalized deviation values of integral estimates of signals controlled system by the formula :
Δ F ^ j ( α l ) = Δ F j ( α l ) Σ r = 1 k Δ F r 2 ( α l ) , j = 1 , ... ,k;l = 1 , ... ,n .13. Calculate the diagnostic signs of defective block box (for n parameters of integration) according to the formula (3).
14. The minimum values of diagnostic character determine the defective unit.
Consider the implementation of the proposed method of finding the defect for the system block diagram of which is shown in the figure (see Fig. The structural scheme of the object of diagnosis).
The transfer function blocks
W 1 = k 1 ( T 1 p + 1 ) p ; W 2 = k 2 T 2 p + 1 ; W 3 = k 3 T 3 p + 1 ,where the nominal values of the parameters: T 1 =5; K 1 =1; K 2 =1; T 2 =1; K 3 =1; T 3 =5 C.
When modeling the input signal will use a single step effect. Control time T to select equal to 10 s.
Define the elements of a topological relationships of each block, which is part of the system for each control point P ji , j=1, 2, 3; i=1, 2, 3, sign transmission signal from the output of the first unit (1) until the first checkpoint is positive, so that P 11 =1, the sign of the transmission signal from the output of the first block to the second control point is positive, so that P 21 =1, the sign of the transmission signal from the output of the first unit to reach the third checkpoint is positive, so that P 31 =1 thus, the vector topological relationships of the first unit will be of the form P 1 =(1,1,1). For the second block (2) sign signal from its release until the first checkpoint is negative, and for the second and third checkpoint - positive, therefore the vector topological relationships for the second unit will be of the form P 2 =(-1,1,1). For the third unit (3) the vector topological relationships will be of the form P 3 =(-1,-1,1).
Modeling of processes of search of defects in the first block (in the form of reduction of the parameter k 1 20%), yields diagnostic signs in three dimensions of integration (α 1 =0.5, a 2 =0.1, and C 3 =2.5) by the formula (3): J 1 =0.248, J 2 =0.9372, J 3 =0.5806. The clarity of the defect: J=J 3-J 1 =0.3326.
For comparison, the diagnostic signs of a bad block (in the form of reduction of the parameter k 1 20%) with one parameter of integration?=0.5: J 1 =0.2237; J 2 =0.9954; J 3 =0.5093. The clarity of the defect J=J 3-J 1 =0.2856.
These results show that the actual conspicuity of finding defects in this way above, therefore, the higher will and robustness of the method.
The minimum value of the diagnostic feature in all cases correctly specifies the defective unit.
Thus, the clarity of defects in the implementation of the proposed method is higher than with a prototype implementation.
Way to find the defective unit in continuous dynamic system, based on the fact that a record number of blocks m, included to the system, determine the time T control To & GE T PP , where T PP - transition time system, determine the parameter of integral transformation of signals from the relation
α = 5 T Kuse the test tone on the interval t belongs to the interval[0,T K ], as the dynamic characteristics of the system used integral estimates of the signals received for analog values α Laplace variable, fixed number k checkpoint systems record a response object diagnosing and reaction known good system f j (t), j=1, 2, ..., k in the interval t belongs to the interval[0,T K ] k control points determine the integral estimates of the output signal F j (a), j=1, ..., k a working system, for which at the moment of the test signal input system rating simultaneously begin the integration of signals of management systems in each of the k checkpoint with weights
e 1 - α t , where α = 5 T Kby filing on the input k blocks of multiplication of the signals control system, on the second inputs blocks multiplication serves exponential signal
e 1 - α toutput signals k blocks of multiplication serves on inputs k blocks of integration, the integration is completed in time T , obtained as a result of integrated assessment of the output signal F j (a), j=1, ..., k register, replace the system of rating controlled, the system input serves a similar test signal x(t), define the integral estimates of signals of the controlled system for k checkpoint F j (a), j=1, ..., k parameter α determine deviations integrated assessments signals of the controlled system for k checkpoint of the nominal values determine the normalized deviation values of integral estimates of signals of the controlled system, determine the elements of a topological relationships of each block, which is part of the system for each control point P ji , j=1, ..., k; i=1, ..., m, P elements ji define a set of values {-1,0,1}, a value of -1 to determine if the transmission of the signal from the output of the i-th block to the j-th checkpoint is negative, the value 0 determine if the transmission of the signal from the output of the i-th block to the j-th checkpoint is missing, the value of l determine if the transmission of the signal from the output of the i-th block to the j-th checkpoint positive, determine the normalized values of the elements of the vector topological relationships for each unit of the ratio of
P ^ j i P j i Σ r = 1 k P r i 2calculate diagnostic signs of minimum diagnostic indicator determine the defect, characterized in that define n parameters signal integration α 1 multiples
5 T Kas a dynamic characteristics of the system used integral estimates obtained for n real α 1 , and define integral estimates of the output signal F j (α 1 ), j=1, ..., k; l=1, ..., n system, for which at the moment of the test signal to the system input rating simultaneously begin the integration of signals of management systems in each of the k control points for n parameters integration with weights
e 1 - α t, l=1, ..., n by applying the input k·n block multiplication of the signals control system, on the second inputs blocks multiplication serves exponential signals
e 1 - α t, l=1, ..., n, output signals k·n blocks multiplying serves on inputs k·n blocks of integration, the integration is completed in time T , obtained as a result of integrated assessment of the output signal F j (α 1 ), j=1, ..., k; l=1, ..., n register, determine the integral estimates of signals of the controlled system for the k control points and n parameters of integration F j (α 1 ), j=1, ..., k; l=1, ..., n, determine the deviations integrated assessments signals controlled system for k checkpoint and n parameters of integration from the nominal values F j (α 1 )=F j (α 1 )-F j (α 1 ), j=1, ..., k; l=1, ..., n, determine the normalized values of integral estimates of signals of the controlled system from the relation:
Δ F ^ ( α l ) = Δ F j ( α l ) Σ r = 1 k Δ F r 2 ( α l ) ,determine the diagnostic features of the ratio:
J i = 1 n Σ l = 1 n { 1 - [ Σ j = 1 k P ^ j i Buna Δ F ^ j ( α l ) ] 2 } , i = 1, ... , m .