SU1285596A1 - Device for automatic checking of shaft turn angle-to-digital converter - Google Patents

Abstract

The invention relates to automation and computing and is intended to automatically check for the absence of malfunctions of the angle of rotation of the shaft into the code. The aim of the invention is to improve the accuracy, speed and functionality of the device. To do this, a device for automatically checking the converters of the angle of rotation of the shaft into the code containing the engine 2, generator 1, registers 6, 7, element 11-comparison, element 9, element 13 BAN trigger 14, entered reference converter 4 of the angle of the rotary shaft into the code .

Description

adder 16 modulo two, pulse shaper 18, inverter 17, element 10, comparison element 12, delay element 19, counter 5, register 8. The goal is achieved by comparing the code of the reference converter 4 of the angle of rotation of the shaft to the code with the code of the converter being checked 20 at the time of the end of the survey, converting the output code of the scanned converter 20 into a parallel

and its recording in the synchronous rotation of the shafts of the transducers. The code is compared with a reference code corresponding to the maximum permissible angular displacement of the signal of the transducer being tested 20 relative to the calculated value. When the difference code of the reference code is exceeded, the polling is interrupted and the erroneous and correct codes are fixed for comparison and analysis of the error. 1 il.

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The invention relates to automation and computer technology and is intended to automatically check for the absence of malfunctions of the converters of the angle of rotation of the shaft into the code.

The purpose of the invention is to improve the accuracy, speed and expansion of the functional capabilities of the device.

The drawing shows a block diagram of the device.

The device contains a generator 1, a distributor of 2 pulses, an engine 3, a reference converter 7 of the angle of rotation of the shaft into a code, a counter 5, registers 6-8, elements 9 and 10, elements 11 and 12 of the comparison, element BAN 13, a trigger 14, an adjustment input 15, an adder 16 modulo two, an inverter 17, a driver 18 and pulses, a delay element -19, as well as a checked angle converter 20, a shaft turning into a serial code.

The device works as follows.

The pulses from the output of the generator 1 are fed to the inputs of the distributor 2 pulses, in which polling pulses are formed, successively arriving at the inputs of the transformer 20 being tested.

When the device is switched on, the motor 3 drives the kinematically rigidly connected shafts of the transducers 4 and 20 into rotation. Through each polling cycle, the code combinations at the output of the transducer being tested 20 change. The output signals of the transducer

The detectors 4 and 20 arrive at the inputs of the registers 6 and 7 respectively. According to the output signals of the generator I, arriving at the control inputs, register 6 is recorded, and register 7 is shifted (conversion of the serial code into parallel) and storing the output code

converters 4 and 20. Parallel codes from V-codes of registers 6 and 7

arrive at the inputs of the comparison element 11 and at the end of each polling cycle are compared, and the code corresponding to the difference between them from the outputs of the element 11 is fed to the inputs of the comparison element 12 and compared with the reference code corresponding to the maximum permissible angular displacement of the signal from the transformer to be tested 20 relative to calculated

value.

When the code of the indicated difference of the maximum permissible displacement at the output of the comparison element 1-2 is exceeded, a signal appears that allows the pulses of the generator 1 to pass through the element 9 to the input of the BAN 13. The trigger 14 is switched to state 1, stopping the operation of the generator 1, In this case, in register 6, the correct code is recorded, in register 7, it is erroneous. When comparing these codes, the coordinates (bit and code) of the error are determined. When a signal is received from the setup input 15, the BANCH element 13 is closed, the trigger 14 is switched to the state O, the check continues.

The reference converter 4 of the angle of rotation of the shaft into a code has an information capacity of N N (bit), where N is the information capacity of the converter to be tested 20. Before starting the test, if the shafts rotate slowly, the condition is met, where f is the code change frequency of the converter to be tested 20; f. - the pulse frequency from the output of the generator 1) is made to combine the reference points of the transducers 4 and 20 as follows.

Modul. Two signals from the higher bits of converters A and 20 arrive at the input of adders 6. During the time that the levels of these signals do not match, the output of the adder 16 is a signal that passes through the inverter 17 to the input of the pulse former 18 and passes the passage generator 1 pulses through element 10 at the input of counter 5. Counter 5 counts the number of pulses arriving — during the divergence time — the reference point of converters 4 and 20. At the end of the count, the code corresponding to the angular difference in time The scale is recorded in the register 8 by a pulse formed from the output signal of the adder 16 by the shaper 18. This pulse through the delay element 19 is fed to the zeroing input of the counter 5. The combination of the reference point is produced by rotating the converter housing 20 to the moment the zero code is written to Register B.

Claims (1)

Invention Formula A device for automatically checking a shaft angle converter into a code containing an engine, the shaft of which is the kinematic input of the device, the generator, the first output of which is connected to the input of the pulse distributor, the outputs of which are the control outputs of the device, the second end of the generator with managers Compiler Editor N. Dumbad Tehred L..0 Lane Order 7535/57 Circulation 899 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 5 o 5 0 5 0 5 0 50 BUT inputs of the first and second registers, the outputs of which are connected to the corresponding inputs of the first comparison element, the information input of the first register is the electrical input of the device, the first element AND whose output is connected to the first input of the BAN element whose output is connected to the first trigger input,. the output of which is connected to the input of the generator, the second input of the trigger is connected to the second input of the BANNER element and is the installation input of the device, characterized in that, in order to increase accuracy, speed and expanding the functionality of the converter, a standard shaft angle converter is entered into the code, modulo two, pulse shaper, inverter, second AND element, second comparison element, delay element, counter and third register, high-order outputs of the first and the second registers are connected to the inputs of a modulo two adder, the output of which is connected to the first input of the second element I and through the series-connected inverter and pulse shaper to the control input of the third register country and the input of the delay element, the output of which is connected to the input-zeroing counter, the outputs of which are connected to the information inputs of the third register, the first output of the generator is connected to the first input of the first element And the second input of the second element And, the output of which is connected to the counting input of the counter, the outputs the first element of the comparison is connected to the inputs of the second element of the comparison, the output of which is connected to the second input of the first element AND, the shaft of the reference converter of the angle of rotation of the shaft into the code is connected to the shaft of the engine Outputs the reference transducer shaft rotation angle in the code are connected to the data inputs of the second register. 1 Sidorenko Proofreader M. Samborska