Method and device for measuring angles and forming angular marks

 

(57) Abstract:

The invention relates to measuring technique and can be used in astronomy, navigation, surveying, technical physics, precision machinery and instrumentation, opto-mechanical and opto-electronic industry and in the construction of buildings. The method of the invention lies in the fact that continuously measure the time intervals between the moments of passing marks of the test object within a predetermined angular speed continuous relative rotation between the control object and positions the read / write its label, memorize them and determine the angles between the marks of the test object on the approximation formula. Angular marks on the object form synchronously with the signal recording labels given topological structure in accordance with the previously defined parameters of the approximation formula, which achieve greater measurement accuracy at a relatively high speed and ease of implementation. The device includes a shaft rotation with labels reading of objects, the position of the read / write node selection control object, the control unit, the analyzer computing, a generator of high stability hours in order to visit the accuracy of the measurement of angles. 2 s and 5 C.p. f-crystals, 2 Il.

The invention relates to measuring technique and can be used in astronomy, navigation, surveying, technical physics, precision machinery and instrumentation, opto-mechanical industry, optoelectronic industry, in the construction of buildings, primarily for initial certification and production of the reference angular measures to determine the instrumental error of the model measuring rotary means for calibration of testing angular polygons, measuring rotary instruments, stands, angle sensors for process control for precision surveying limbs, corner optical elements, raster grids, code disks, optical disks, memory, in the development and creation of a new class of high-precision measuring rotary instruments and equipment.

The known method of controlling the rotation angle of the Aut. St. USSR 1767325, CL G 01 B 11/26, namely, that rotate the rotary device with installed o-ring laser and multi-faceted prism clockwise register for one full turnover of the number of pulses of the photoelectric autocollimator when combining the normal to the face of the prism with the VI is the times between two registered pulses of the autocollimator, rotate the rotator in the opposite direction, re-register for one full turnover of the number of pulses of the autocollimator and re-calculate the number of periods of the signal of the ring laser, calculate the difference of the number of pulses of the autocollimator and produce comparing this difference with the number of faces of the prism, simultaneously with the calculation of the difference between the number of pulses of the autocollimator calculate the difference of the amount period of a ring laser for a complete revolution obtained by revolving in both directions, make a comparison of the calculated difference with the number of periods of the signal of the ring laser, the comparison result is judged on the work of the measuring system.

The disadvantage of this method is that the difference between the number of periods of the signal of the ring laser is not a unique function of the angle between the faces of the prism due to the instability of the split frequency of a ring laser, depending on many factors, including the angular speed of rotation of the rotary device, limiting the sensitivity of a ring laser small angular velocities.

There is a method of determining the average error of the transparent limb uglee error of each of the strokes in the group of strokes of the read mask on the limits of light-shadow and shadow-light and use the data definitions in the processing of measurement results.

The method introduces additional errors in the instrumental error of the instrument when determining private errors along the boundaries of light-shadow and shadow-light, in addition, it is inefficient and ethnological, as it requires a scaled-down layout or mechanical intervention inside measuring rotary device when determining the averaged error.

A device (ed. St. USSR 1384951, CL G 01 C 1/02) that implements the method lies in the fact that continuously rotate fixed on one axis of the reference and controlled limbs and simultaneously measured (filled with pulses of stable frequency) the time intervals between pulses, fixing the angular position of the strokes of the reference limb, and between pulses, fixing the angular position of the stroke of the controlled limb, and process errors are controlled for each interval according to the formula

< / BR>
wherei- the angle between the strokes of the controlled limb;

o- the angle between the strokes of the reference limb;

Ti- the number of pulses of stable frequency, put in the time interval between strokes controlled limb;

To- the number of periods of stable frequency, put in in erenia additional error due to the inaccuracy exemplary limb and inaccuracy in the setting of the angle measures of the reference limb in agreement with the angular measure of the controlled limb, when the ratio of the number of strokes and the scale reference of the limb to the number of strokes of the scale of the controlled limb is not an integer multiple of.

Known way to determine the standard deviation of diameters of the limbs measuring rotary instruments (ed. St. USSR 556314, CL G 01 C 1/00), namely, that compare the times of passing through the sighting axis of the respective strokes of the reference and test limbs, are mounted on the same rotating axis.

The method introduces additional measurement angular error due to the inaccuracy of the reference limb, the frequency instability of the rotation axis, furthermore, the method does not allow control of the limbs with any law of the location of the long strokes along the circumference different from the reference limb.

The known method of measuring angular values and device for its implementation (ed. St. USSR 1795271, CL G 01 B 11/26), namely, that form the first and second interference pattern from a single laser (coherent source spatial radiation) with the angle of the descent of the July situation of one of the interference pattern relative to the other.

In the implementation of the method used, the laser is connected with the object, the mirror unit and system analysis.

The disadvantages of this method include the small range of measured angular values up to 3.5 minutes of arc, the effect of the propagation medium on the accuracy of measurements at spaced coherent channels radiation.

It is known device for controlling tracks limbs goniometric devices [1] that implements the method lies in the fact that continuously rotate mounted on the same shaft as the reference and controlled limbs, convert the signals read from the reference and controlled limbs in a pulse sequence, multiply the frequency of the pulses of the reference sequence (method impulsivity locked loop), strobert in time the position of the boundary controlled strokes of the limb relative to the edges of the strokes of the reference limb, fill on the limits of the stroke intervals multiplied by the frequency of pulses of the reference sequence, and count the number of pulses of padding between the border lines, the data entered in the computer analyzer, remember and define the position of the boundaries of controlled strokes of the limb.

Way, the reality is I.

Known measuring machine "ECTM-M (Gerd Suchard, a New complex of instruments for precision circular scales, journal of Jena review, N2, PP 92-94, 102, CARL ZEISS IENA, Germany, JENA, 1986), which implements the method of angular measurement, namely, that rotate with a constant angular speed of the rotor is made in the form of high-precision air bearings radial runout of no more than 0.03 Ám, which is fixed to the primary circle and the object to be measured, transform information from the primary circle and the measurement object in a pulse sequence, measure the time intervals between the strokes and the strokes of the primary circle is calculated from the number of the primary circle, corresponding amendments and the measured time intervals angular position of the strokes of the measured object, output data after the correction of the eccentricity of choice, namely the radial or diametrical lines in relation to the first stroke, or normalized to the average total error of the division, or in the form of the error interval.

The disadvantages of the method implemented in the measuring machine can be attributed to the presence of additional error due to angular instability CLASS="ptx2">

Known method of evaluation scales measuring rotary device, based on the method of control Heuvelink, Barnakov E. C., Methods and tools for automated control circular measures, analytical review, 1970 - 1988 - NIIICE, 1989, consists in the fact that repeatedly compare the values of the angles are counted in measuring rotary device with the angles of the reference sensor, and after each round of comparisons within 360othe control angle sensor turn on one of the angular interval of the scale relative to the measuring rotary device, complete the comparison of the angles when turning the control angle sensor 360oregarding certified measuring rotary device.

The method allows to eliminate the non-uniformity of error values depending on the number of steps spread and slightly reduce the value of the error. The disadvantages of this method include low productivity due to the large amount of manual labor attestation accordingly considerable weight to subjective evaluation.

Closest to the claimed method and device for measuring angles is the way of measuring the error of the position of the strokes circular scales and device for its implementation [2], Zack is ony read and compare the received signal with a time-averaged signal, distinguish their difference frequency, and integrate it over time.

The method makes measurement more systematic and random error due to phase detection in the allocation of the difference frequency and its integration.

The device according to the method contains the motor spindle with arbor for mounting a circular scale, a reading unit that optically associated with a circular scale, the measuring unit of the phase detection, the processing unit, the Registrar, the sensor start position, kinematically associated with the spindle, the control unit and the unit radial displacement, mechanically associated with the reference block.

A device that implements the method introduces additional measurement error due to destabilizing factors of the engine to the frequency of the calibrated scale.

Metrological certification and verification of measuring angles is one of the tasks of technical physics, the solution of which depends on the level of technology in many industries that are closely linked with the economy of production and product quality.

It is clear that in the first place requires new, inexpensive, easy to implement, high-precision the Russian certification and verification of reference and reference angular measures in their manufacture, storage and replication, as well as in the creation on their basis of hardware and measuring rotary process equipment, which are made to measure and control in the production, including, details, elements, angular topological structures, sites, and products that perform the functions of measuring rotary primary working tools, such as prism, scales, dials, screens, diffraction gratings, coded disks, optical disks, memory, sensors, instruments and devices for various purposes.

Improving the accuracy of the angle measurement of the object of monitoring and improving the accuracy of formation of angular marks on the object in the present method is achieved by continuously measure the time intervals between the moments of passing marks of the test object within the set of whole revolutions of the continuously relative rotation between the control object and positions the read / write its label, memorize them and determine the angles between the marks of the test object according to the formula

= F(t-to)

where

- the angle of relative rotation between the control object and positions the read / write its label;

F - function approximation, i.e. interpolation;

t - Aluminii angles between the labels of the object of control deviation of the zoom function of the angle of relative rotation of the inspection object and positions the read / write its labels compare with their valid values, correct the specified number of whole revolutions of relative rotation depending on the comparison result, repeat the steps for the measurement of time intervals between marks of the test object, described previously, to provide the conditions under which deviations of the zoom function of the angle of relative rotation between the control object and positions the read / write its label does not exceed the allowable values of deviations;

When measuring angles between labels continuously rotating the test object mounted on the shaft and centered with respect to the axis of rotation of the shaft, having a small friction torque, axial and radial runout further define the influence of eccentricity and adjust the angles between the marks on the magnitude of the effect of eccentricity;

When measuring angles between labels continuously rotating the test object mounted on the shaft and centered with respect to the axis of rotation of the shaft, having a moment of inertia, a much greater moment of inertia of the object of control, and small friction torque, axial and radial runout, the angles between the labels of an object is determined in accordance with the measured time intervals between the moments of the passing positions of the reading for the Kim properties and parameters of the object previously described actions with preservation of other conditions, ensure the implementation of the previously described actions, the initial argument accept the beginning of a period of rotation equal to or close to the value of the first rotation period relative to the position of reading the same controlled object on the previously installed function approximation on the run.

When measuring the in-plane analysis of the angles between the labels of an object of control, the passage of which focused on the object positions the read-write mounted on the shaft so that their sight lines are in one plane analysis with the axis of rotation of the shaft, together with the positions of the read / write large moment of inertia and low friction torque, axial and radial runout, the angles between the labels of an object is determined in accordance with the measured time intervals between the moments of passing positions the read / write object labels control on the previously installed function approximation actions described earlier, keeping other conditions, ensure implementation of the actions described earlier.

Corner marks on the object, continuously rotating relative to the oriented position of the read-write mounted on the shaft and centered on ossipee labels given topological structure in accordance with a previously installed function approximation at time of passage of the object positions the read / write, at the initial argument of the formation of angular marks in time take the beginning of the period relative rotation of the object with a previously installed function approximation.

In addition, the angular marks on the object, continuously rotating oriented relative to the position of the read-write mounted on the shaft and centered on the axis of rotation of the shaft, having a small friction, axial and radial run-out, form synchronously with the signals read labels from the other, mounted on the same shaft and centered on the axis of rotation of the shaft, the object on which the angular marks formed on a given topological structure actions in accordance with a previously installed function approximation.

In Fig. 1 and 2 show the device and its execution by the present method respectively.

The device comprises a shaft 1 rotation with labels reading of the whole turnover of the shaft and its fractions, made for example in the form of high-precision bearings with gas lubrication (the rotating part of the bearing shown in section), which is centered and fixed object 2 control, made for example in the form of a glass of a limb or of a ring laser (Fig. 1 2 conditionally control)

the control object 3, made for example in the form of a cylinder or disk, the axis of symmetry of which combine with the axis of rotation of the shaft 1, or prism side face which is oriented parallel to the axis of rotation of the shaft 1;

position 4 read-write, made for example in the form of a photoelectric autocollimator, the sighting axis is combined with the normal to the side face of the prism, and when they combine to produce the signal sensing or transmitting devices, oriented with respect to the object 3 to its cylindrical surface or ground plane that is perpendicular to the axis of rotation of the shaft 1;

positions 5 and 6 read / write is executed in the form of a transmitting-receiving transducers labels of the whole turnover of the shaft 1 and of its shares accordingly, for example, in the form of photovoltaic or electro-optical, or magneto or magneto-optical, and position 5 is used mainly to perform read operations (reception);

node 7 select the control object, the first input connected to the output position 4, and the second input is connected to the output position 6 read the labels of the test object 2;

the control unit 8, the first input connected to the output position 5 with the recording positions 4 and 6, respectively, and a second output connected to the third input node 7;

computing the analyzer 9, made in the form, for example, electronic computers, whose first inputs are connected with the third output unit 8 and the first terminals are connected with the third input of block 8;

the generator 10 high-stability frequency pulse, the output of which is connected to the fourth input unit 8;

the imaging unit 11 of the front and cut (front and back edge) of the signal reading of the labels of the test object, made in the form of temporary release provisions of fronts, for example, points of inflection, whose first input is connected to the output node 7, the second input is connected to the fourth output unit 8, and a third input connected to the output of the generator 10;

the counter 12 pulse, the first input connected to the output of the generator 10, and the second input to the fourth output unit 8;

registers 13, 14, the first inputs of which are connected to the outputs of the counter 12, the second inputs connected respectively to the first and second outputs of the driver 11, the third inputs connected to the second outputs of the analyzer 9, and outputs connected to the second inputs of the analyzer 9;

triggers 15, 16 in which the first inputs connected respectively to the first and second outputs of the driver 11, the second inputs of the treatment tip can is connected to the third inputs of the analyzer 9.

A device to measure angles on the proposed method works as follows.

On the shaft 1 rotation set, center and fix the objects 2, 3, orientate positions 4, 5, 6 read / write relative to the labels of the objects 2, 3. Spin the shaft 1 (Fig. 1 drive unwinding shaft 1 is not shown), leave the shaft 1 in the free run.

The first outputs of the analyzer 9 on the third input unit 8 sequentially in time set setting 1 (the number of whole revolutions of the rotation time set setting 1 (the number of whole revolutions of the shaft 1, respectively, of the object of control by choice or object 2, or 3), the START signal, which in block 8 designerour and remember. On the fourth output unit 8 generates a signal, which act on the second input of the shaper 11 and prohibit the passage at its outputs signals read labels object control current at the first input of the shaper 11. In addition, the signal on the fourth output unit 8 impinges on the second input of the counter 12, the second inputs of the triggers 15 and 16, set triggers, 15, 16 and the counter 12 in the initial state, prohibit the expense of the pulses coming from the output of the generator 10 to the input of the counter 12.

certainty, for example, select the object 3.

During the rotation of the objects 2, 3 on the outputs of the positions 4, 5, 6 produce signals in the form of pulse sequences read the labels of the objects of control, which serves at the first input node 7 to the first input unit 8 and to the second input node 7, respectively.

Since the time of arrival from the output position 5 pulse read the label of the whole turnover of the shaft 1 to the first input unit 8, in the presence of data in the memory START signal, in block 8 performs the preparation for forming the beginning of a measurement cycle.

From the time of arrival of the pulse read the label of the object 3, following the impulse label of the whole turnover of the shaft 1, the pulse from the output node 7 of the act on the second input unit 8, the fourth output of which produces a signal, which remove the ban of the pulse output from the generator 10 is supplied to the first input of the counter 12, the second input of the shaper 11 permit the passage through it is formed on the front and a slice of pulses read the labels of the object 3 with its first and second outputs to the first inputs of the triggers 15 and 16, respectively.

Moreover, the pulses on the first and second outputs of the driver 11 in time produce the fronts of impolite 3 nearest the front of the pulse generator 10, shift them in time, for example, half of the period of the repetition frequency of pulse generator 10 with respect to the counting of the pulse received from the output of the generator 10 to the input of the counter 12.

Thus, form the beginning of a measurement cycle, tied to the first pulse of the read label of the object 3, which came after the pulse, the read label of the whole turnover of the shaft 1, which count in block 8 and is compared with a preset setpoint 1 of the analyzer 9.

The first pulse at the first output of the shaper 11, formed upon its first entrance from the front of the pulse read the label of the object 3 by the exposure to the first input of the trigger 15 and to the second input of the register 13, while the record from the output of the counter 12 in the register 13 in his first inputs information on the number of pulses of the generator 10 is received in the counter 12, and set the trigger output is 15 in one state. The output signal of the trigger 15 in one of the third inputs of the analyzer 9 report on the readiness of the information in the register 13 to read into the analyzer 9. The analyzer 9 poll the output signal of the trigger 15 and its single output state on one of the second outputs of the analyzer 9 generates a signal, which affect Aut, and on the third input of the trigger 15 set its output to the zero state.

Thus, the analyzer 9 register 13 enter the initial information of the measuring cycle and remember.

The second pulse at the second output of the shaper 11, formed upon its first entrance of the slice pulse read the label of the object 3 by the exposure to the first input of trigger 16 and to the second input register 14, while the record from the outputs of the counter 12 in register 14 to the first inputs information on the number of pulses of the generator 10 is received in the counter 12, and set the trigger output is 16 in one state. The output signal of the trigger 16 through one of the third inputs of the analyzer 9 report on the readiness of the information in the register 14 to read into the analyzer 9. The analyzer 9 poll the output signal of the trigger 16 and its single output state on one of the second outputs of the analyzer 9 generates a signal, which affect the third input register 14, read information from the output register 14 in the analyzer 9 in his second inputs and remember, on the third input of the trigger 16 sets its output to the zero state.

Thus, the analyzer 9 registers 13 and 14 since the beginning of the cycle and the pulse is read the label of the object 3, read the argument of the function approximation, otherwise the current time, expressed by the number of pulses of the generator 10, each time after reading the argument of the function in the analyzer 9 performs the operation of subtracting from the current argument to the function approximation, measured along the front or edge of the pulse read the label of the object 3, the previous argument to the function approximation, as measured by the slice or the front of the pulse read the label of the object 3. The difference, equal to the time interval between front and slice pulses read the labels of the object 3, remember the analyzer 9, and the previous measured value of the argument of the function approximation is removed from memory analyzer 9.

This process continues up until the block 8 will not equal the set point 1 to the number of whole revolutions of the shaft 1, calculated on the first input unit with 8 output position 5 of the reading.

In case of equality of setpoint 1 with the number of pulses read the labels of whole revolutions of the shaft 1 is received at the first input of block 8, block 8 prepare operation upon completion of a measurement cycle, which is done at the time of arrival to the second input unit with 8 output node 7 of the first pulse of the read label of the object 3, the next premeability signal, selectively front of the first pulse of the read label of the object 3 and shifted by one period of the frequency generator 10 with respect to the counting pulse perceived by the counter 12 to the first input unit 8 to the fourth input. The signal from the fourth output unit 8 act on the second input of the shaper 11, thus preventing the flow through him at first and second outputs generated at the front and a slice of pulses read the labels of the object 3 to the second input of the counter 12, thus forbid the pulse generator 10 is supplied to the first input of the counter 12, and set the counter 12 in the initial state, the second inputs of flip 15, 16, and install them in their original state. On the third output unit 8 generates a signal of the END of MEASUREMENTS and submit it to the first inputs of the analyzer 9, where the signal designerour, and perform mathematical operations on the determination of angles between the labels of the object 3 in accordance with function approximation and measured between time intervals, and the result of a mathematical operation display part of the analyzer 9, for example, the screen of the video display or printing device. Additionally, the analyzer 9 with its keyboard set the allowable knowing its label, calculate these deviations, compare and depending on the result of the comparison, adjusting the setpoint 1 and repeat the measurement cycle with the new setpoint value 1 to ensure that the conditions under which deviations of the zoom function of the angle of relative rotation between the object 3 and position 4 read its label does not exceed the allowable values of deviations.

If you measure the angles between the markers continuously rotating object 2 control, mounted on the shaft 1 and is centered relative to the axis of rotation of the shaft 1, having small friction torque, axial and radial run-out, in the cycle of measuring time intervals between the moments of passing marks subject 2 position 6 read-write during setting 1, then repeat the actions performed in the cycle of the measurement object 3, in addition to selecting the object 2, which is made before the start of the measuring cycle under the influence of the signal from the second output unit 8 to the third input node 7, when the pulses tag read from the output position 6, supplied to the second input node 7 are on their way out, and the pulses supplied to its first input from the output position 4, an output node 7 does not pass.

At the end of the measuring cycle the analyzer 9 define the corners of the mi between the labels of the object 2 intervals of time.

With known functional law of the angular positioning of the labels by dividing the circumference of the object 2 control memory analyzer 9 with its keyboard injected current array of values of the angles between the marks, which must be obtained, for example, in the manufacture of technologically object 2. The analyzer 9 compares the calculated array of values of the angles between the labels with the measured values of these angles and define an array of deviations (differences) of the measured value relative to the estimated angle between their corresponding labels of the object 2, for which the analyzer 9 determine the influence of the eccentricity of the position of the object relative to the axis of rotation of the shaft 1, the magnitude of the first harmonic for each value of the angle between their corresponding labels of the object 2 and correct the measured value of each of the angles between the labels of the object 2 on the corresponding angular value of the influence of eccentricity.

If you measure the angles between the markers continuously rotating another of the same object 2 control, mounted on the shaft 1 and is centered relative to the axis of rotation of the shaft 1, having a moment of inertia, a much greater moment of inertia with another identical object 2, and the small moment of friction of the ends of nami passing oriented position 6 is determined according to the previously installed function approximation for another of the same physical properties and parameters of the object described earlier actions with preservation of other conditions, ensure implementation of the actions described earlier.

For this condition before the start of the measurement cycle from the first outputs of the analyzer 9 on the third inputs of the block 8 set setpoint 1 (the number of whole revolutions of the shaft 1 is same as object 2), setpoint 2 (the value of the period of rotation of the same object relative to the position 6 with a previously installed function approximation) and the START signal, which in block 8 designerour and remember. On the fourth output unit 8 generates a signal, which act on the second input of the shaper 11 and prohibit passing on his signal outputs of the read object labels 2 acting on its first input.

In addition, the signal on the fourth output unit 8 impinges on the second input of the counter 12, the second inputs of flip 15, 16, set triggers, 15, 16 and the counter 12 in the initial state, prohibit the expense of the pulses coming from the output of the generator 10 to the first input of the counter 12.

During the rotation of the object 2 from the output position 5 to the first input unit 8 serves pulses, the period which continuously measure in block 8 and is compared with the setpoint 2. At the time of arrival of the pulse read the labels of the entire turnover in the presence of the START signal, when the rotation period of the rate 2 (the value of the first period of rotation of the same object with a previously installed function approximation),

Tois the rotation period of the same object 2 control,

unit 8 performs the preparation for forming the beginning of a measurement cycle, which is completed at the time of arrival to the second input node 7 of the output position 6 of the first pulse of the read label of the object 2, following the impulse to read the label of the whole turnover of rotation of the object 2, the period of which is located within the

Ty< To< Ty(1+10).

Next completely repeat the steps in the cycle of measuring time intervals between the moments of passing the object labels 2 position 6 for set point 1.

For more accurate binding on initial conditions to the previously installed function approximation of the same object 2 in the analyzer 9 perform additional comparisons of the periods of rotation of the same object with a previously installed function approximation with periods of rotation of the object 2 of the control.

When the difference of the periods set point 1, which is within the acceptable range for a given measurement accuracy of the angles between the labels of the object 2, for the initial argument of the function approximation of the same object 2 at a time take the beginning of its period of rotation, which is equal to the first period about the data accuracy of measurement of the angles between the labels of the object 2. Then the analyzer 9 determine the angles between the labels of the object 2 control, performing mathematical operations in accordance with a previously installed function approximation, adopted by the condition of the initial argument and measured between the labels of the object 2 intervals of time.

When measured in the plane of the analysis of the angles between the labels of the control object 3, the passage of which focused on him continuously rotating coast positions read, mounted on the shaft 1 so that their sight lines are in one plane analysis with the axis of rotation of the shaft 1, together with the positions read a large moment of inertia and low friction torque, axial and radial runout, the angles in the plane of analysis between the labels of the object 3 is determined in accordance with the measured time intervals between the moments of passing the rotating positions of the read object labels on the previously installed function approximation described earlier actions with conditions ensure the implementation of the previously described actions.

In Fig. 2 shows the measuring device in the plane of analysis of the angles between the labels of an object control (option).

The device comprises a shaft 1 rotation, imeneo limb or disk, mounted on the shaft 1 and is centered on the axis of rotation of the shaft, the control object 18, which has one of the labels 19 - 22, for example, a label 19 reading or their private collection, can be fixed, mounted on the shaft 1 position 23 read-write, made in the form of transmitting and receiving signal transducer and oriented in a rotating plane analysis on the label 19 - 22 control object 18, the output of which is connected to the first input node 7 selection (Fig. 1), and the input record is connected to one of the two first output unit 8 (Fig. 2 connection not shown). The device also contains items 5 and 6 read-write, respectively, the labels of the whole turnover of the rotation shaft 1 and the labels of the object 17, the outputs of which are connected respectively to the first input unit 8 and to the second input node (7, Fig. 1) and the input recording position 6 is connected to the second of the first two outputs of block 8 (Fig. 2 connection not shown).

The device according to the variant (Fig. 2) works as follows.

The shaft 1 with the position 23 oriented in the plane of analysis of the tag reading 19 - 22 object 18 control so that when measuring the label after a turnover time followed a fixed label 19 object 18, spin the shaft and leave the mode wyb speed of rotation of the shaft 1 and the subject 18), setpoint 2 (the value of the period of rotation of the shaft 1 is the same as the object 17, relative to the fixed label 19 object 18 with a previously installed function approximation) and the signal START, completely repeat the steps in the cycle of measuring time intervals passing position 23 reading time between marks 17 of the object 18 to be performed when measuring angles between labels continuously rotating another object, such as object 17, with the exception that for more accurate binding on initial conditions to the previously installed function approximation in the analyzer 9 when determining the angles between the labels of the object 18 in the plane of analysis for the initial argument (count start) function approximation take the time beginning of the period of rotation position 23 relative to the fixed label 19 object 18, which is equal to the period of rotation of the shaft 1 with a previously installed function approximation or differs by an amount valid for the given precision measurement of angles in the plane of analysis. The analyzer 9 in the plane of analysis determine the angles between the labels 19 - 22 object 18, performing mathematical operations in accordance with a previously installed function approximation, adopted by the condition of the initial argument and measured between match the shaft 1 (Fig. 1) set, center relative to the axis of rotation of the shaft 1, and fix the object 3, made for example in the form of a glass disk coated on one surface of the thin metal film, oriented position 4 read / write with respect to the object 3.

In the analyzer 9 set, for example, with its keyboard-generated topological structure on the object 3 and the allowable error in the formation of angular marks on the object 3, where this information to memorize. Spin the shaft 1 and leave in run-on mode. From the first outputs of the analyzer 9 on the third inputs of the block 8 set setpoint 1 (the number of whole revolutions of the shaft 1, selection 2, made for example in the form of glass limb, centered on the axis of rotation of the shaft 1 and is secured in position on the shaft 1), and the signal START. Then perform the previously described operations in the cycle of measuring time intervals between marks of the object 2, which define the parameters of the function approximation for setpoint 1 with deviations of the angle of rotation of the shaft 1 relative to the positions of the reading, not exceeding the value determined depending on a given allowable error of formation of angular marks on the object 3. After determining the parameters of fcta 3 on a given topological structure in accordance with the established function approximation and is recorded in the memory array, the angular position of the generated angular marks. Then from the first outputs of the analyzer 9 is recorded in the memory unit 8 according to the third inputs of the function of forming angular marks on the object 3, setpoint 1, setpoint 2 (the value of the period of rotation of the object 3 with a previously installed function approximation), the setpoint 3 (the number of object labels 2), the signal START. In block 8 information designerour and remember, at its second output to produce a select signal of the object 2, the fourth produce its output signal, which act on the second input of the shaper 11 and prohibit the passage at its outputs signals read object labels 2 acting on his first entrance. In addition, the signal on the fourth output unit 8 impinges on the second input of the counter 12, the second inputs of flip 15, 16, set triggers, 15, 16 and the counter 12 in the initial state and prohibit the expense of the pulses coming from the output of the generator 10 to the first input of the counter 12. Spin the shaft 1 and stored in the run.

During the rotation of the object 2 from the output position 5 on the first input unit 8 and the output node 7 to the second input unit 8 serves pulses, where continuously measure their age and the number and compare with settings 1, 2 and 3. At the time of arrival of the pulse from the output node 7 to the second input unit 8, when rasnet, unit 8 generates a signal of the beginning of the forming cycle angular marks on the object 3. One of the first output unit 8 generates pulses records that are served on the input recording position 4 in accordance with the function of forming angular marks on the object 3 at the current time, determined by counting the number of pulses output from the generator 10 to the fourth input unit 8. In addition, the fourth output unit 8 generates a signal, which remove the ban of the pulse output from the generator 10 is supplied to the first input of the counter 12, the second input of the shaper 11 permit the passage through it is formed on the front and a slice of pulses read the labels of object 2 (fractions of revolutions of the shaft 1 with its first and second outputs to the first inputs of the triggers 15 and 16, respectively.

Thus, the beginning of the forming cycle angular marks on the object 3 are tied in time to the beginning of a period of relative rotation of the object 3, equal or similar value (within the permissible limit of deviation setpoint 2. This time is used as the beginning of the cycle measuring time intervals between marks of the object 2 over setpoint 1 and completely repeat the previously described steps until ravenschlag on the object 3 in block 8 counts the number of pulses of the labels of the object 2 (interest periods of rotation of the shaft 2) and the achievement of equality with setpoint 3 on one of his first outputs stop producing pulses, at the input position 4, and complete the formation of angular marks on the object 3.

Upon reaching the equality of the number of whole revolutions of the shaft rotation and setpoint 1 on the fourth output unit 8 generates a signal, which act on the second input of the shaper 11, stop the measurement of time intervals between marks of the object 2 and bring the measuring circuit to its original state ready for new cycles. On the third output unit 8 generates signals on completion of measurement cycles and the formation of angular marks, serve them on the first inputs of the analyzer 9, where these signals designerour. The values of time intervals between marks of the object 2 in the analyzer 9 define the function approximation for object 3 and compare it with previously established for him by the function approximation. The comparison result is judged on the completion of a cycle of formation of angular marks and make a preliminary conclusion about the accuracy of formation of angular marks on the object 3. For a final conclusion about the accuracy of angular marks on the object 3, without removing it from the shaft 1, the measure of angles formed between it labels the actions described previously. After performing the measurement of the angles between the marks formed on the object is new deviations in the position of the labels (structure elements) and compare them with the allowable angular error. If the deviation of position of the labels on the corner does not exceed the allowable angular error, the operation of forming the angular marks on the object 3 recognize completed and the object 3 is suitable, if you exceed the allowable angular error, then produce an additional control for the purpose of grading, establishing the causes of unacceptable deviations and eliminate these causes.

If the object 3 is suitable, depending on the needs replicating (copying) or removed from the shaft 1 or overwrite the object 2, thus performing the operation of forming (recording) angular marks on the object 2 in synchronism with the signals read labels with object 3. When overwriting shift position 6 relative to the object 2 at the free field labels, spin the shaft 1, with the first outputs of the analyzer 9 on the third input unit 8 specify information about the formation of angular marks, selection, setpoint 1 and 3, the START signal. In block 8 information designerour and remember. On the second output unit 8 to produce a signal which selects the object 3. Then the first pulse label with output position 5 in block 8 prepares to perform rewriting cycle, which begins the first pulse of the read label of the object 3, passed Ricetta pulses labels, arriving at its first and second inputs, compared with the setpoints 1 and 3, at the time of their equality completes the cycle of the formation of angular marks on the object 2. After that make the measurement of the angular position of the marks formed on the object 2 and tolerance control actions described earlier, the result of which is judged on the quality of execution of the rewrite.

In the proposed method and device for measuring angles and forming angular marks as a working measure use of time, thereby reducing the number of factors affecting the accuracy of measurement of angles and forming angular marks, reduce them to two, namely the instability frequency quantization time and instability transformation fronts object labels within a relatively short time intervals perform the measurement cycles and formation than achieve the highest accuracy of measurement of angles and forming angular marks in comparison with the considered known analogues.

Thus, the proposed method and the device can be used as a method and means for the evaluation and validation of high-precision test of the angular polygons, goniometric devices, stands, sensors, products Assembly psob and device allow for a wide range of measurement angles between the labels of controlled objects as moving, and motionless.

The proposed method and the device in comparison with the known analogues due to ease of implementation, due to including a combination of two functions measurement and formation of angular marks in a single device, allow relatively easy to automate the process of measuring angles, manufacture, replication (copying), storage angular measures, such as scales, grids, code masks optical devices and photovoltaic cells information.

Method and device make it easy to match the technology of laser processing of thin films on substrates in measurement processes, manufacture, reproduction, storage angular measures, bypassing the multistage similar processes, such as photolithography, which excludes all operations photolithographic process, including chemical and the equipment itself photolithography. This reduces the requirements for physical and chemical properties of the films and surface layers of the substrate which gives a possibility to obtain high mechanical properties abrasion resistance metallized stable angular measure with high resolution, for example, mesh, limbs, masks, optionsbecause replication, that allows you to control the parameters of angle measures in the manufacturing process and to provide significant performance gains. This allows you to keep working exemplary and reference angular measures as in-memory computing analyzer, and other media, and multiple copies of different angular measures on the same media that's built right into the unit of measurement of angles and forming angular marks as media and as the object of control, and as part of shaft rotation with angular entire label turns and share, which allows you to reduce costs, including the complexity of the measurement, manufacturing, duplication (copying) and storage angular measures. This allows to reduce the subjectivity of the measurement results and to improve the accuracy of angular control measures.

The method and the device can be easily combined with technical means of tracking, which allows the most efficient use of their construction, geodesy and navigation, when the position of the read / write angular marks are in the form of transceiver devices probing signals.

The proposed method and the device allow to develop a new class would be of the rotor, spindle, when performing positions the read / write based scanning systems with electric control of the spatial position of a plane of analysis of the corners in the function from the time that the most promising systems of the circular review and protection of aircraft from collisions with objects.

The invention tested in industrial conditions based on the automated installation of control of limbs, implemented by ABT. St. USSR 1049736, CL G 01 C 1/06; G 01 C 25/00. Positive results were obtained.

1. The method of measurement of angles containing the registration time of passage of the object-oriented control positions the read / write its label during continuous relative rotation between the control object and positions the read / write, characterized in that the continuously measure the time intervals between the moments of passing marks of the test object within the specified integer speed continuous relative rotation between the control object and positions the read / write its label, memorize them and determine the angles between the marks of the test object according to the formula

= F(t-to)

where is the angle of relative rotation between the control object and the positions of measurement time;

t0- the initial argument, corresponding to the beginning of time.

2. The method according to p. 1, characterized in that the deviation of the zoom function of the angle of relative rotation between the control object and positions the read / write its label, is compared with the allowable value, correct the specified number of whole revolutions of relative rotation depending on the comparison result, repeat the steps for the measurement of angles to ensure the conditions under which the variance function approximation from corner relative rotation between the control object and positions the read / write its label does not exceed the allowable values of deviations.

3. The method according to p. 1, characterized in that it further compare the known calculated values of the angles between the labels located on dividing the circumference of the test object, centered with respect to its axis of rotation, with the measured values of these angles determine the deviations of the measured values relative to the estimated angle between the corresponding labels of an object, which determines the influence of the eccentricity of the position of the control object relative to the axis of rotation and correct the measured values of the angles between the met is the yubom of PP.1 - 3, characterized in that the angles between the labels of the same physical properties and parameters of the object is determined according to a previously installed the zoom function on the coast, with the initial argument take the beginning of the period equal to the first period of rotation relative positions of the read / write of the same physical properties and parameters of the controlled object, and the angles between the marks of the test object is determined in accordance with the measured time intervals between the moments of passing marks of the test object relative to the position of the read / write on the run.

5. The method according to p. 1 or 2, characterized in that it further form the corner of the label on the object synchronously with the signal recording labels given topological structure in accordance with a previously installed function approximation in the time of its passage position the read / write mode, with the initial argument to the function of forming angular marks in time take the beginning of the period relative rotation of the object equal to the first period of rotation of the object with a previously installed function approximation on the run.

6. The method according to p. 1 or 2, otlichayushiesya on the same shaft and centered on the axis of rotation of the shaft, the object on which the angular marks formed on a given topological structure actions in accordance with a previously installed function approximation.

7. Device for measuring angles and forming angular marks containing the rotational drive kinematically associated with the shaft oriented positions the read / write tags of whole revolutions of the shaft and object labels, characterized in that it is equipped with a host of selection objects, the first and second inputs connected to the outputs of positions the read / write labels of the objects, the control unit, the first input connected to the output position of the read label of the whole turnover of the rotation shaft, the second input coupled to the output node, select the object, while the first two outputs connected respectively to the inputs of positions in angular marks on objects and the second output is connected to the third input node of the object is selected, the analyzer computing, the first input of which is connected with the third output control unit, and the first terminals are connected with the third control unit, a generator of high stability frequency pulse, the output of which is connected to the fourth input of the control unit, driver front and slice signal read object labels, first the population, and the third input is connected to the output of the generator high-stability frequency pulses, a pulse counter, a first input connected to the output of the generator high-stability frequency pulse and the second input is connected to the fourth output control unit, the first and the second registers, the first inputs of which are connected to the outputs of the pulse counter, and the second inputs are connected respectively with the first and second output driver front and slice signal read object labels, the third inputs connected to the second outputs of the analyzer computing, and outputs connected to the second inputs of the analyzer computing, the first and second triggers, the first inputs of which are connected respectively with the first and second output driver front and slice signal read object labels, second input connected to the fourth output control unit, the third input connected to the second outputs of the analyzer computing, and outputs connected to third inputs of the analyzer computing.

 

Same patents:

Astrologiae // 2112211
The invention relates to nautical astronomy and can be used on ships and vessels for determining the geographic coordinates of the observation of the heavenly bodies

The invention relates to astronomicheskii measurements and can be used to determine deviations of the plumb line, clarification of the Earth rotation parameters and other geodetic tasks based on the knowledge of astronomical coordinates

Theodolite // 2079104
The invention relates to a geodetic instrument and is intended for geodetic, surveying and engineering surveys
Theodolite // 2075888

The invention relates to a geodetic instrument, but can be used in other areas of instrumentation, which uses a photoelectric method of reading information circular and linear stroke scales and measuring or converting analog values into digital code

The invention relates to measurement techniques, in particular to measurement of angular displacements of the nodes mechanisms opto-electronic means

The invention relates to measuring technique and can be used for precision measurements of the angles of rotation of the object mounted on alidade

The invention relates to measuring technique and can be used for measuring angles of rotation of the rotors of the generators, mobile nodes in the machine the rolling element rotational viscometer, etc

The invention relates to measuring equipment

The invention relates to measuring technique and can be used in such devices as theodolites, torsion balance for measurement automation

The invention relates to measuring technique and can be used for measuring angles of rotation of the rotors of the generators, the rolling element rotational viscometers

The invention relates to an active measuring means balancing dynamic objects, in particular aerostatic bearings, used as a technical means of providing an optical recording (playback)

The invention relates to measuring technique and can be used to generate a pulse starting at the meter movements

The invention relates to the field of measurement technology and is used to determine the spatial geometry of the technological channels, including
Up!