SU1049736A1 - Device for inspecting tracks of protractor limb - Google Patents

Abstract

DEVICE FOR THE CONTROL TRACK Limbach goniometer, soaernsaschee privotsimy rotated wap on which sockets are provided losatsochnye dp Fitting believed in forward and etaponnogo .limbov and fotoepektricheskie converters for reading tracks of divisions limbs connected to skem measuring the time lag between the pulses corresponding pospetsovatepnost m The divisions of the tracks, checked and phased limbs, differ in that, with a chain of increasing the accuracy of control of each division of limbs, arbitrary For example, photoelectric transducers for reading the droning of the reference limb are connected to the signal input of the valve controlling the meter of the measurement circuit, through the input multiplier of the pulse, performed as a tracking system with pulse phase auto-tuning of the frequency, and to the control input of - through the input pulse frequency divider with a C 3 division ratio, adjustable in accordance with the width of the track being scanned (L limb at the same time as with another control input kpap The aya is connected to a photoelectric transducer to read the divisions of the track of the turned limb, and the output of the counter is connected to the input of the computational analyzer. about 4 CO 1 CO o

Description

The invention relates to equipment for contr and capillating of goniometers, and more particularly for devices for controp of pimbas, used in particular in transducers

uoth - Kots with a variable counting interval. These devices can also be used by the contropor tsorozhek limbs of various angular stroke measures, geodetic, astronomical and navigation instruments.

It is known a device for controlling limbs, a social axis, two photo-reading devices from rotating and reference limbs, a photoelectric auto-compensator, in which the signal is read from the sig- nal edge of the reference pimba, which significantly reduces the accuracy of the reference signal and, due to the eccentricity of the reference pimba on the axis of rotation, the bearings rotating knot, and also errors of a target reference limb. In addition, the first harmonic of the calibrated accuracy of the errors of the limb strokes is not found with due accuracy, since the visual assessment of the figure, which is drawn on the photobug 1ag, is of a purely subjective nature.

Known device CL control

The errors of the diameters of the limbs of the protractor tools, the societal reference and turntable limbs, are rigidly attached to the components of the rotational components, the photoelectric transducers, coupled with the strokes of the reference and adjustable pimples, as well as the time delay measurement function between the partitions and the reference pimps, as well as the time lag between the methods of measuring the timbres of the reference and turnable pimbas, as well as the time lag between the methods of measuring the timbers of the reference and turnable pimbas, as well as the time lag between the methods of measuring the timbers of the reference and turnable pimbas, as well as the time delay measurement between the part of the test timbers, and also the time lag between time taps between the test timbers and pimbas, mi and the corresponding sequences of tsorhek depositions of comparable

limbs 2.

I.

This device allows detecting only the errors of the diameters of the dials, does not allow the possibility to carry out the control of each stroke of the turned limb. A significant limitation of the capabilities of the known device is to control only the limbs, the number of strokes of which is equal to the number of strokes of the reference pimba.

The chain of the invention is to improve the accuracy of control of each division of the Pimbas tracks of arbitrary resolution.

This circuit is achieved by the fact that in the device for controlling the tracks of the limbs of the goniometers, containing

A rotary shaft on which landing slots are provided for installing the turnable and reference limbs, as well as photoelectric converters for reading the divisions of the tracks of both limbs, connected to the time delay measurement circuit between pulses, the corresponding sequence of divisions of the tracks of the checked and reference limbs, photoelectric Converters for reading the helix values of the reference limb are connected to the signal input, the meter control valve, An input multiplier input multiplier, made as a follow-up system with a pulse phase-locked loop, and to a valve control input through an impulse frequency input unit with a division factor adjusted according to the width of the turn track, could be limb, while A photoelectric converter for reading the depot of the track of a turnable Pimba is connected to another control input of the valve, and the counter output is connected to the input of the computation analyzer.

FIG. 1 shows a printable diagram of the device; in fig. 2. and 3 are simplified block diagrams of a multiplier and pulse frequency healer.

A rotatable limb 1 and a reference limb, which are, for example, a transparent glass disk with a deposited layer of silver, on which a uniform line of strokes is cut, are fixed on the common shaft 3 connected to the motor 4, Photoelectric transforms 5 - 8 are matched with strokes tracks of the reference limb 2, and the photoelectric converter 9 - with grooves of the track of the rotated limb 1, the inputs of unit 10, are coupled to the outputs of photoelectric converters 5-8, paired with the strokes of the track of the reference pimba 2, and the output is input 4 multiplier 11 and frequency divider 12 with variable division factor. The output of the divider 12 is connected to. The second control input of the valve .13, the first control input of which is connected to the output of the photoelectric converter 9, is paired with the strokes of the track of the pimba 1 &. The signal input of the valve 13 is connected to the output y of the shock output 11, and the output is connected to the input of the counter 1 UZP lO - .14 form a time-lapse measurement circuit that is co-located with the computer-aided analyzer 15 with an output incirator 16. In the analyzer plane of the photoelectric converters 5-8 nahrts ts, the analyzing slots and limb on the analysis plane so sig nal is obtained at the output of a triangular shape. These signals are sent to the block 10 averaging packs of input impuppes. The moment of occurrence of impedance at the output of unit 10 corresponds to the center of the pulse train at its inputs. Unit 1O can be implemented, for example, as an adder on resistors and a threshold element. From the exit blo. 10 a sequence of reference pulses, the phase of which characterizes the angle of rotation of the shaft 3 with limbs 1 and 2, is applied to the multiplier 11. A signal proportional to the difference is extracted from the phase detector 17 17 multiplicator 11. phases between each input pulse from the 1O block and each Nth pulse, separated by divider 18 from the pulse train of the controlled oscillator 19. This signal is fed to the input of the filter 20, at the output of which this signal is maintained during the whole period between the input pulses. A signal from the output of the filter 20 is applied to the input of the controlled generator 19; the frequency of which varies depending on the input voltage. Thus, the frequency at its output varies in proportion to the change in the phase difference at the output of the phase detector 17, i.e. it turns on N times the frequency of the input pulses. The pulses from the output of the controlled generator 19 are fed to the signal input of the valve 13, which opens with the first control input a pulse from the output of the photoelectric transducer 9 of the transducer 9, and closes at the second control input with a reference pulse from the output of the unit 10, passing through ishm through the healer 12 frequencies with a tree division ratio. . The counter pulse sequence 21 is fed to the input of the counter 21 of the divider 12, the number of which for one revolution of the shaft 3 is equal to the number of strokes applied to the reference pimb 2. The switch 22 is manually set to the position corresponding to the bit of the limb being tested, while the input of the differentiating circuit 23 is connected with the corresponding output of the counter 21, the voltage on which has the form of a square wave, the number of periods of which for one revolution of the axis of rotation is equal to the number of strokes on the track of the rotating limb 1. Diff The differentiating circuit 23 produces short pulses at its output along positive edges of the pulse, pulses at its input. Bundles are formed at the outlet of valve 13, the number of pulses in which characterizes the error of the strokes of the turning (limb). The pulses of each packet are counted in the counter 14.x The mono analyzer calculates the amplitude A and the phase H., the first harmonic and the error of each stroke on the limb being calibrated. L. CU .. -n (p. + H), where is the limb error in each stroke; cH is the difference phase between Perceptual and reference sequences in each stroke; 1 is the order number of the stroke, A is the amplitude of the first harmonic} Mi is the phase of the i -th line, .j is the initial phase of the first harmonic, is the mathematical expectation of the array. The use of the {{) device to control the errors of the strokes of donor limbs makes it possible to increase the measurement accuracy in comparison with the existing devices for monitoring the strokes of the strokes of the tracks of the limbs by eliminating the error of the eccentricity of the PS of the verified limb on measuring directly in the process 3-5 times; reduce the measurement time by excluding the operator from performing additional operations to exclude eccentricity 2-3 times; ensure control of limb tracks with any period of stroking.

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Claims (1)

DEVICE FOR MONITORING LIMB ROADS OF ALGOROMIC DEVICES, containing a rotatable shaft on which mounting sockets are provided for the installation of the calibrated and reference limbs, as well as photoelectric converters for reading the divisions of the limb tracks connected to the measurement circuit of the time delay between the pulses. of the divisions of the tracks, the calibrated and the reference limbs, characterized in that, in order to increase the accuracy of control of each targeting of the tracks of the limb of arbitrary bit depth, photoelectric converters for reading the targeting of the tracks of the reference limb are connected to the signal input of the valve controlling the counter of the measurement circuit, through the input multiplier of the input pulses, made as a servo system with a pulse phase self-tuning of the frequency, and to the control valve input through the input pulse frequency divider with the division factor, which is regulated in accordance with the bit depth of the track of the verified limb, while a photoelectric converter is connected to the other control input of the valve for reading the targets of the track of the verified limb, and the output -> the output of the counter is connected to the input of the computational analyzer. SU .. „Ί 049736