SU1167463A1 - Measuring device to balancing machine - Google Patents

Abstract

MEASURING DEVICE TO THE BALANCING MACHINE, containing an unbalance sensor and two electrical circuits connected to it, each. gave of which made in the form of a series-connected phase detector, storage unit and am. an amplitude modulator, an adder, the inputs of which are connected to the outputs of amplitude modulators, an unbalance indicator, the input of which is connected to the output of the adder, a phase meter, the first input of which is connected to the output of the adder, a third phase detector, the output of which is connected to the second input of the first phase detector, the fourth phase detector, the output of which is connected to the second input of the second phase detector, a phase sensor, the output of which is connected to the first inputs of the third and fourth phase detectors, and a carrier generator oty, first exit. which is connected to the first input of the phase sensor and the second inputs of the third phase detector and the first amplitude modulator, and the second output to the second inputs of the phase sensor, the fourth phase detector and the second amplitude modulator, in order to improve the performance of the balancing process, The device is equipped with a second phase sensor, the first and second inputs of which are connected respectively to the first and second inputs of the first phase sensor, the control unit, the first element. volume I, K5-trigger, R-input of which is connected to the output of the first element I, and 5-input - with the output of the block (L control, Ck-trigger, S-input of which is connected to the first input of the first; first element And the output of the first phase sensor, the K input with the direct output of the P5 flip-flop, and the L input with the inverse / € output of the R5 flip-flop, the second and third And elements, the first inputs of which are interconnected, 4ib with the inverse the output of the EC trigger and the second input of the first element I, o: a frequency divider, the first input of which is connected to the third output of the carrier generator frequency, the first counter, the first input of which is connected to the output of the frequency divider and to the second input of the second element And, and the second input to the output of the second phase sensor, to the input of the JK-flip-flop, the second input of the frequency divider and the second input of the third element And, the second counter , the first input of which is connected to the output of the second element And, and the second - to the output of the third element And and the digital com

Description

parator, the first and second inputs of which are connected respectively

1167463

with the outputs of the first and second counter, and the output is the second input of the phase meter.

one

The invention relates to balancing technology and can be used in balancing machines and semi-automatic devices with separate measuring and correction positions.

The purpose of the invention is to improve the performance of the balancing process.

The drawing shows a functional diagram of the device.

The measuring device to the balancing machine contains an unbalance sensor 1, first and second phase detectors 2 and 3 connected to its output, two memory blocks 4 and 5 connected to their outputs, two amplitude modulators 6 and 7 whose first inputs are connected to memory outputs blocks 4 and 5, the adder 8, each of the inputs of which is connected to the output of one of the amplitude modulators 6 and 7, the unbalance indicator 9 and the phase meter 10, the first inputs of which are connected to each other and to the output of the adder 8, the third phase detector 11, the stroke of which is connected to the second input of the first phase detector 2, a quarter phase detector 12, the output of which is connected to the second input of the second phase detector 3, the first phase sensor 13, the output of which is connected to the first inputs of the third 11 and fourth 12 phase detectors, carrier frequency generator 14 the first input of which is connected to the first input of the first sensor 13 of the phase and the second inputs of the third phase detector 11 and the first amplitude modulator 6 and the second output to the second inputs of the first sensor 13 of the phase, fourth phase data the torus 12 and the second amplitude modulator 7, a second phase detector 15, first and second inputs connected respectively to first and second inputs of the first

phase sensor 13, element 16 AND, RS trigger 17, whose R input is connected to the output of element 16 AND, control block 18, the output of which is connected to the S input of the RS flip-flop 17, 1K trigger 19, whose S input is connected to the first input element 16 and the output of the first sensor 13 phase, K-input - with direct output RS-flip-flop 17, and I - input - with inverse output RS-flip-flop 17, second and third elements 20 and 21, the first inputs which are interconnected, with the inverse output of the 1K-flip-flop and the second input of the element 16 I, the frequency divider 22, the first input of which is connected to the third output of the generator torus 14 of the carrier frequency, the first counter 23, the first input of which is connected to the output of the frequency divider 22 and the second input of the second element 20 I, and the second input - with the input of the second sensor 15 phase, C - output 1K-trigger 19 and the second inputs of the frequency divider 22 and the third element 21 And the second counter 24, the first input of which is connected to the output of the second element 20 And, and the second input with the output of the third element 21 And, the digital comparator 25, the first and second inputs of which are connected respectively to the outputs of the first and second counters 23 and 24

The device works as follows.

A balanced rotor having several fixed positions in which it can be installed on the spindle of the balancing machine (set-up position) is installed on the spindle of the measuring position of the machine. Spindle rotation is turned on and oscillations of the machine's suspension system are sensed by sensor 1. From sensor 1, an unbalance signal is fed to the information inputs of the phase detectors OB 2 and 3, to the control inputs of which

Two orthogonal reference signals with a rotating speed of the balanced rotor are provided. The reference signals are formed at the outputs of the phase detectors 11 and 12. To do this, the signal from the output of the phase sensor 13 goes to the first inputs of the phase detectors 11 and 12, to the second inputs of which are orthogonal carrier frequency signals from the first and second outputs of the carrier frequency generator 14. The carrier frequency generator 14 consists of an oscillator / rectangular waveform, two frequency dividers and two signal conditioners with a frequency difference. The output of the square wave oscillator is connected to the inputs of the frequency dividers and to the third output of the carrier frequency generator 14. At the outputs of the dividers, rectangular-shaped signals are formed, the frequency of which is 360 times lower than the frequency of the signal of the rectangular-wave oscillator, shifted in phase from each other by 90 °. The outputs of the dividers are connected to the inputs of the drivers, the outputs of which, in turn, are associated respectively with the first and second output of the carrier frequency generator 14. The generator 14 of the carrier frequency can be implemented on the logical elements of the NAND and 1K-triggers. To provide a phase shifter mode, a phase sensor 13, which can be used as a rotating transformer, is powered by orthogonal carrier frequency signals from generator 14. Constant voltages, proportional to the projections of the unbalance vector, from the outputs of phase detectors 2 and 3 are fed to the inputs of storage units, respectively. 4 and 5. Storage units are dual-link analog storage devices with capacitor memory. After the end of rotation of the balancing rotor, the zombie blocks are switched to the information storage mode. In this case, if the positioning on the correction position is completed, i.e. the second links of the storage devices are ready to receive new information, the latter is copied to the second links of the storage blocks 4 and 5, and the voltage appears at their outputs, corresponding to the projections of the imbalance vector in the measuring line 674634

coal coordinate system. The voltages from the outputs of the storage units 4 and 5 are fed to the information inputs of the amplitude modulators 6 and 7, 5 to the control inputs of which are fed orthogonal carrier frequency signals from the first and second outputs — the generator 14. The output signals from the modulators 6 and 7 are fed to first and

About the second input of the adder 8, at the output of which a sinusoidal carrier frequency signal is extracted, which is analogous to the unbalance vector in the reference polar coordinate system.

15 From the output of the adder 8, the signal is fed to the input of the unbalance indicator 9 and to the first input of the phase meter 10. After the measurement at the measuring position, correction and correcting position is completed, the spindle with the balancing rotor is set to any of the fixed position set - remove, the balancing rotor is removed from the measurement position and is transferred to the corrective. At the moment of transferring the balancing rotor from the measuring position to the correction signal of the sensor 15, the correction position can

0 to be phase-shifted relative to the signal of the sensor 13 of the phase of the measuring position. Due to the fact that the shtdels of the measuring and correcting positions are fixed at certain divided positions at which installation and removal of the balancing rotor is possible, the signal of the phase sensor 13 may be out of phase with the signal

sensor 15 phase by the value, krat ° 360

where n is the number of fixed positions at which the balancing rotor can be mounted and removed from the spindle. When determining the correction angle at the correction position, it becomes necessary to take into account the matching of the signals of the phase sensor 13 and the phase sensor 15 and the signal circuit of the phase sensor 15 to introduce a delay so that the leading edge of the delayed signal of the phase sensor 15. coincided with the leading edge of the signal sensor 13 phase. Otherwise

5 correction angle will be determined

with an error equal to the amount of phase shift signals of the sensor 13 phase and the sensor 15 phase. For the delay of the front 5 front of the signal of the phase sensor 15, it is necessary to measure the lag of the leading edge of the signal of the phase sensor 13 relative to the leading edge of the signal of the sensor 15 of the phase, for which, from control unit 18, the S-input of the RS-trigger 17 receives a signal that sets the RS-trigger 17 in a single state. The unit state is taken (ZTS is a trigger state in which a high voltage level appears close to the power supply voltage at the forward trigger output and a low voltage level close to the potential of the common wire at the inverse output. . A high level from the direct output of RS-flip-flop 17 goes to the K-input, and a low level from the inverse output of RS-flip-flop 17 goes to the G-input of the 1K-flip-flop 19. The front end 15 divider 22 frequency and the counter 23 is set to the zero position, and the 1K-trigger 1 is set to the state corresponding to the signals at its information inputs I and K. At this, its inverse output shows a high level arriving at the first input of elements 20 and 21 AND and the second input of element 16 AND allowing the signal from the output the frequency divider 22 through the element 20 And to the first input of the counter 24, the signal of the sensor 15 of the phase through the element 21 And to the second input of the counter 24 and the signal of the sensor 13 of the phase through the element 16 And to the R input of the RS flip-flop 17. The counter 24 represents is a binary decimal counter a count of pulses received at its first input the code 8-4-2-1. The second input of the counter is the input of setting the counter to zero, at which a code corresponding to zero appears at its output. From the third output of the carrier frequency generator 14, a signal with a frequency of 360 times the frequency of the signal at the first and second outputs of the carrier frequency generator 14 is fed to the first input of the frequency divider 22. From the output of the frequency divider 22, a signal with a frequency is n times less than the frequency of the input signal (where n is the number of fixed positions, in the described case n 5, at which 36 balancing rotors can be mounted on the spindle of the balancing machine and removed from the spindle) enters the input of counter 23 and through element 20 I to the first input of counter 24. Counter 23 is similar to counter 24. The positive edge of the signal from phase sensor 13 arrives at the S input of RS flip-flop 19, the last is set to one and t.rigger 17 te 13 as the phase front of the sensor signal input at the R-input through the element 16 - in a zero state. At the same time, at the output of the 1K-flip-flop 19, a low voltage level prohibits the passage of the signal from the output of the frequency divider 22 through the element 20 to the input of the counter 24, the signal of the phase sensor 13 through the element 16 to the R input of the RS-flip-flop 17 and the signal of the phase sensor 15 to the second input of the counter, ik 24. Thus, the first input of the counter 24 is passed by Iv1 pulses, the number of which indicates how many fixed positions the spindle of the correction position is rotated relative to the spindle of the measuring position at the moment of transfer of the balancing rotor from responsibly, the error value of the sensor signal 13 and phase 15 datchichika phase. From the output of the counter 24, the signal in the binary-decimal code 8-4, 2-1, corresponding to the number of pulses transmitted to its first input, arrives at the second input of the digital comparator 25. Digital compa-. Rattor 25 is a two code comparison scheme implemented on logical AND-NOT elements. The first input of the digital comparator 25 receives a signal in code 8-4-2-1 from the output of the counter 23. By a positive (leading) front of the sensor of the phase 15 sensor, the counter 23 is set to the zero state. At the same time, if at least one is detected by the counter 24 the pulse, the codes of the signals at the inputs of the digital comparator 25 are different from each other, and a low voltage level is set at its output. When pulses arrive at the input of the counter 23 from the output of the frequency divider 22, the code of the signal at the output of the counter 23 changes. When comparing the codes at the inputs of the digital comparator 25 at its output by

Claims (1)

MEASURING DEVICE To the BALANCING MACHINE, containing the unbalance sensor and two electric circuits connected to it, each. One of which is made in the form of a phase detector connected in series, a storage unit and an amplitude modulator, an adder, the inputs of which are connected to the outputs of the amplitude modulators, an unbalance indicator, the input of which is connected to the output of the adder, a phase meter, the first input of which is connected to the output of the adder the third phase detector, the output of which is connected to the second input of the first phase detector, the fourth phase detector, the output of which is connected to the second input of the second phase detector, phase sensor, output It is connected to the first inputs of the third and fourth phase detectors, and a carrier frequency generator, the first output i of which is connected to the first input of the phase sensor and the second inputs of the third phase detector and the first amplitude modulator, and the second output - with the second inputs of the phase sensor, the fourth phase detector and a second amplitude modulator, characterized in that, in order to improve the performance of the balancing process, the device is equipped with a second phase sensor, the first and second inputs of which are connected respectively the first and second inputs of said first phase detector, a control unit, the first elements. Volume I, with a RS-trigger, whose R-input is connected to the output of the first element, § And, and the S-input is' with the output of the control unit, ЗК-trigger, whose S-input is connected to the first input -per-; of the first AND element with the output of the first phase sensor, the K-input - with the direct output of the RS-trigger, and the 3-input - with the inverse output of the R5 trigger, the second and third elements of And, the first inputs of which are interconnected, with the inverse output of the EC -trigger and the second input of the first element And, the frequency divider, the first input of which is connected to the third output of the carrier frequency generator, the first counter, the first input of which is connected to the output of the frequency divider and the second input of the second element And, and the second input - with the output of the second sensor phase, with the E-trigger input, in the second input of the frequency divider and the second input of the third element And, the second counter, the first input of which is connected to the output of the second element And, and the second - with the output of the third element And and the digital comSU, .., 1167463 parator, the first and second inputs with outputs of the first and second the counter, which output is connected respectively to the second input of the phase meter.