SU1490517A1 - Disbalance vector meter - Google Patents

Abstract

This invention relates to a balancing technique. The purpose of the invention is to improve the accuracy by increasing the phase measurement discreteness. The signal from the generator 5 pulses to the input of the standby multivibrator 16 before it is blocked by the second counter 18, while the pulses from the output of the standby multivibrator arrive at the input of the first counter 6. Thereafter, with a delay produced by the delay element 17, the input of the counter 6 receives pulses from the generator 5 pulses extended in the first expander 11 pulses. When the unbalance signal reaches its maximum, its value is fixed by indicator 3, and the pulse from the pulse former 4 is fed through the second expander 12 of the pulse to the reversing input of counter 6, where the unbalance phase code is generated, which is indicated on the digital indicator 7. 1 Il.

Description

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The invention relates to the balancing roving technique and can be used in balancing rotating parts, assemblies and mechanisms.

The purpose of the invention is to increase the accuracy by increasing the phase measurement discreteness.

The drawing shows a block diagram of the proposed meter.

The meter contains a sync pulse generator 1, an unbalance meter 2, an indicator 3 connected to it and a pulse shaper 4, a pulse generator 5 connected in series to the first counter 6 and a digital indicator 7, the first 8, the second 9 and the third 10 triggers, the C-inputs of which are connected respectively with the outputs of the sync pulse generator 1, the first trigger 8 and the driver 4 pulses, and the D input of the third trigger 10 - with the output of the second trigger 9, two expander 11 and 12 pulses, the input of the first of which is connected to the output of the first trigger 8, n The first 13, the second 14, and the third 15 of the AND circuit, the first inputs of which are connected respectively to the outputs of the second triger 9 and the first 11 and the second 12 pulse converters, and

the second - between themselves, with the R-inputs of the first 8 and third 10 triggers and with the output of the generator 5 pulses, waiting for the multivibrator 16, the first input of which is connected: v1) D. the first circuit And 13, the element 17 of the delay, the input of which is connected to the output of the second circuit And 14, the second counter 18, the input and output of which are connected respectively to the code and the second input of the waiting multivibrator 16, the third counter 19, the input of which is connected to K-vhog M the second trigger 9, the input of the second expander 12 pulses and the output of the third trigger 10, and the output with the D input of the first trigger 8, and the OR circuit 20, the inputs of which are connected to the outputs of the waiting multivibrator 16 and the delay element 17, and the output with the first input the first counter 6, the second input go is connected to the output of the third circuit And 15.

The generator 1 of sync pulses is intended for p, 1} generation of a sync pulse when a rotating body passes a mark applied to the object of balancing through the working area of the sensor and

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can be performed, for example, in the form of a contactless inductive converter.

An unbalance meter 2 is designed to measure vibrations (vibrations) of an object to be balanced during rotation in supports, to amplify and filter the vibration signal at the frequency JO of the object's rotation.

Indicator 3 is intended to induce the amplitude of the unbalance vector.

The shaper of 4 pulses is intended for the formation of normalized pulses at the moment when the signal is from the meter. maxi imbalance is small.

The pulse generator 5 is designed to generate pulses of about 20 Rbz known angle of rotation of the object and is made in the form of a disk, for example, mechanically crated and rotating together with a balancing body, having n holes for forming 25 pulses using a photosensor.

The first counter 6 is designed to form the phase code of the unbalance vector.

Digital indicator 7 is designed 30 to indicate the phase of the unbalance vector.

The first trigger 8 is designed to form a time interval, the beginning of which is a pulse from the, output of the sync pulse generator 1, and the end is the first pulse following it from the output of the generator of 5 pulses.

The second trigger 9 is intended for the Ap formation of a time interval.

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the beginning of which is the pulse L of the output of the sync pulse generator 1, and the end is the pulse from the breather forming the pulse 4 pulse.

The third trigger 10 is designed to form a time interval, the beginning of which is a pulse from the output of the driver 4 pulses, and the end is the first after it from the generator of 5 pulses.

The first 11 and second.12 pulse extenders are designed to increase the duration of the pulses arriving at their inputs by a factor of ten.

The first 13, the second 14 and the third 15 of the And circuit are intended to form sequences of pulses on their outputs.

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The waiting multivibrator 16 is designed to form a high-frequency pulse train.

The delay element 17 is designed to delay the pulses by the time required for the operation of the counter of the counter 6.

The second counter 18 is designed to block the operation of the standby multivibrator 16 after ten pulses have been received at its counting input.

The OR 20 circuit is intended to form a pulse train.

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 blocking the operation of the synchronization generator 1.

The meter operates as follows, OM.

When the balancing object is rotated, the generator 1 of the sync pulse generates a pulse that sets the first trigger 8. At the same time, the signal of the unit level from the output of the first one. rig (: ra 6 enters the input of the first expander 11 pulses, and also sets the second flip-flop 9, a unit-level CHI signal is applied to the KOTOpoio input. As a result, the first c: /, and I 13 opens and pulses from the generator output 5 pulses arrive to the input of the waiting multivibrator 16, which is started and the pulses from its output through the circuit OR 20 are fed to the counting input of the first counter 6. At the same time (after w ;. ), the second counter 18 overflows and the waiting mule is blocked by a signal from its output Selector 16. Thus, for each pulse from the generator output 5 pulses to the counting input of the first counter 6 i- ten pulses will stop.On the first pulse from the generator output 5 pulses (after the generator 1 of the sync pulse is triggered) i i the trigger 8 is reset. In this case, its output also reaches a zero level signal. The first expander 11 increases the duration of the pulse that has drunk at its input by a factor of ten. As a result, the pulses from the generator output 5 pulses flow through the second circuit AND 15 to the counting input of the first counter 6 (through the delay element 17 and the circuit OR 20 during -time ten times longer than

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time from the moment of operation of the sync pulse generator 1 to the moment of arrival of the first pulse after the generator output 5 pulses). Element 17 delays these pulses by the time it takes for the counter to count ten pulses from the output of the multivibrator standby 16. With further rotation of the balancing object, there comes a moment when the signal from the unbalance meter 2, which has the maximum value, enters the indicator 3, while The indicator 3 indicates the amplitude of the DGS balance vector, and the 4 pulse forms a pulse from this signal, which sets the third trigger 10 into a single state. The signal of the unit level is fed to the input of the second expander 12 imguls and resets the second flip-flop 9 to zero state. As a result, the operation of the first circuit 13 and 13, the third counter 19, is blocked, the first trigger 8 is blocked. When the first pulse arrives (after the generator 4 has triggered) the pulse from the output of the pulse generator 5, the third trigger 10 is reset to the zero state. The second expander 12 generates a pulse, the duration of which is ten times longer than the duration of the pulse and the output of the third trigger 10. As a result, pulses from the output of the generator of 5 pulses flow through the third circuit 15 to the reverse input of the first counter biv time ten It is times longer than the time from the moment of the response of the generator 4 pulses to the first after this pulse from the generator output 5 pulses. Thus, in the first counter 6, a code is generated corresponding to the phase of the unbalance vector, which is indicated on the digital indicator 7.

The effectiveness of the proposed measurement; i), compared with the known meters, is a higher measurement accuracy.

When measuring the phase of the unbalance vector by known meters, the measurement accuracy is limited to 20, where 0 is the angle determined by the discreteness of the pulse generator 5.

The proposed meter, due to the additional measurement of the phase value at its boundaries, more accurately measures the phase. This is achieved by increasing the duration of pulses 11 and 12 pulses, determining the asynchrony of the moments of arrival of pulses from a generator of 5 pulses with phase boundaries and further counting these pulses at extended intervals in the counter 6. At the same time, the pulses of the generator of 5 pulses the intrinsic phases are increased by the waiting multivibrator 16 tenfold.

Thus, the proposed meter (as compared to the known ones) more accurately measures the phase of the unbalance vector and, moreover, forms the phase code, half a century. JTBK tvuyusche magnitude fzy,. about ; Iol e / exclude from Cv - ,, - irtri olokov з ме ит ит1.

Claims (1)

Invention Formula An unbalance vector meter containing a sync pulse generator, an unbalance meter, an indicator connected to its output, and a pulse shaper pulse generator, the first counter, l iif). Indicator, characterized in that, in order to improve accuracy, it is connected with the first, second and third triggers, the C inputs of which are connected respectively to the outputs of the clock generator, the first trigger and the pulse former, the R inputs of the first and third triggers with the output of the pulse generator, and the D input of the third one with the output of the second trigger, two pulse extenders, the input of the first of which is connected to the output the first trigger, the first, second, and third circuits AND, the first inputs of which are connected respectively to the outputs of the second trigger and the first and second pulse extenders, and the second between them and the output of the generator, the pulses waiting for the multivibrate, the first input of which is connected to E-EXO - the house of the first circuit And, the delay element, the input of which is connected to the output the second cpr-1 And, the second counter, ii ii ii ол:: соедин: connected in conjunction with the second and; in the switch of the diversified multivibrator, the third counter, whose input is connected to R-input of the second trigger, input second pulse; pulse spreader and the third trigger output, and the output - with the D-INPUT of the first trigger, and the OR circuit, whose inputs are connected to the outputs of the waiting multivibrator and element- :: ij - "- c, and the output - with the first input tT 1 euro counter, the second input is connected to the output of the third And circuit, and the output - with the input of a digital indicator.