SU1144191A1 - Shaft turn angle encoder - Google Patents

Abstract

SHAFT ANGLE CONVERTER IN THE CODE contains a sinus-sinus rotary transformer, the outputs of which are connected to the first and second inputs of the quad switch, the digital output of which is connected to the third output of the quad switch, analog outputs of the coy-I dinene with the inputs of the first and second amplifiers, the outputs of which are connected to the first inputs of the first and second blocks of keys, respectively, the outputs of which are connected to the inputs of the first and second resistive matrices, respectively, the outputs of which are connected to the signal inputs of the first and second amplifiers, respectively, the second output of the distribution unit is connected to the first input of the control register, the first output of which is connected to the second input of the first key block, and through the inverter block. to the second input of the second key block , the output of the comparison unit is connected to the second input of the control register, the third output of the distribution unit and the second SP output of the control register are with the outputs of the converter, which is in that, in order to simplify the converter, the outputs of the first and second resistive matrices are connected to inputs of the comparison unit.

Description

This invention relates to automation and computing. A known converter of shaft rotation angle into a code containing a sine-cosine rotary transformer, the output of which is connected through amplifiers to analog inputs of digital-analog converters, which are connected to the sign selector, analyzer, discrete selection block, reversible counter, and sine-cosine converter, distributor and divider lj. The closest technical solution to the invention is a shaft rotation angle converter into a code containing a sine-cosine rotating transformer, the outputs of which are connected to the first and second inputs of the quad switch, the digital output of which is connected to the input of the distribution unit, the first output connected to the third input quad switch, the analog outputs of which are connected to the inputs of the first and second amplifiers, outputs connected to the first inputs of the first and second key blocks, respectively The outputs of which are connected to the inputs of the first and second resistive matrices, respectively, the outputs connected to the signal inputs of the first and second amplifiers, respectively, the second output of the distribution unit are connected to the first input of the control register, the first output of which is connected to the second input of the first key block and through the inverter unit - with the second input of the second key block, the output of the comparison block is connected to the second input of the control register, the second outputs of the distribution block and the control register are the conversion outputs Atel, the third block of keys and the third resistive matrix 2J. A disadvantage of known transducers is their complexity. The aim of the invention is to simplify the converter angle of rotation of the shaft in the code. The goal is achieved by the fact that in the converter of the angle of rotation of the shaft into a code containing a sinus-sine rotating transformer whose outputs are connected to the first and second inputs of a quad switch, the digital output of which is connected to the input of the distribution unit, the first output connected to the third input of the quadrant switch, analog outputs of which are connected to the inputs of the first and second amplifiers, outputs connected to the first inputs of the first and second key blocks, respectively, whose outputs are connected with the inputs of the first and second resistive matrices, respectively, the outputs of which are connected to the signal inputs of the first and second amplifiers, respectively, the second output of the distribution unit — to the first input of the control register, the first output connected to the second input of the first key block, and through the inverter unit — to the second the input of the second key block, the output of the comparison block is connected to the second input of the control register, the third output of the distribution block and the second output of the control register are the outputs of the converter, the outputs n rvoy and second resistive matrices vxodami connected to comparing unit. The drawing shows a diagram. Converter angle of rotation of the shaft in the code. The converter comprises a quadtangle switch 1 quadrants, an amplifier 2, a block of 3 keys, a resistive matrix 4, an amplifier 5, a block of 6 keys, a resistive matrix 7, a block of inverters 8, a block 9 of comparison, a control register 10, a distribution block 11, a sine-cosine rotating transformer 12 .., The converter works as follows. The inputs of a sine-cosine rotary transformer (SCWT) 12 are fed to switch 1 of quadrants, where two higher bits of the output code are formed, and at the outputs of amplifiers 2 and 5, a certain polarity is obtained. The signals from the outputs of amplifiers 2 and 5 are received through blocks 3 and 6 of the keys on resistive arrays 4 and 7. Control of block 6 of keys is performed by the output code K, and block 3 of keys by the code 1-K through block 8 of inverters. These codes are used when working in the 1st 3rd quadrants. In the 2nd and 4th quadrants, the control codes of the 3: and 6 keys are changed: dp of the sine channel (3 key block) with the K code, | a for the cosine (6 key block) 3114419

code 1-k. The voltages U and U from the outputs of resistive matrices 4 and 7 are equal to

i-u T § Ш -.

where and is the voltage at the output of GKBT 12, K, (° C is the angle of rotation of the shaft

 12), About

C - 0.217,

arrive at the inputs of the comparison unit 9 and amplifiers 2 and 5.

The values of K, (1-K) correspond to certain transfer coefficients 5 of resistive matrices 4 and 7, the Coefficient, there (1-e) and 2C correspond to

between the resistances (input, in the feedback circuit and resistive matrices 4 and 7).

The control of the blocks 3 and 6 of the keys is performed from the control register 10, which operates according to the principle of bitwise weighting. Clock pulses are sent to control register 10 from distribution block 11,

switching on or off of the corresponding bit in control register 10 is carried out from the gain of comparison unit 9. When the voltages at the input of the comparison unit 9 become the same, the conversion cycles are completed, and the angle code is generated at the output of the control register 10.

Usihoi

12

Ucostc.

Claims (1)

ANGLE SENSOR SHAFT CODE comprising sinusnokosinusny rotary transformer, the outputs of which are connected to first and second inputs of switch quadrants, a digital output coupled to an input distribution unit, the first output is connected to the third input switch quadrants _t comrade, analog outputs which soe- I are dined with the inputs of the first and second amplifiers, the outputs of which are connected to the first inputs of the first and second blocks of keys, respectively, the outputs of which are connected to the inputs of the first and second res arrays of matrices, respectively, whose outputs are connected to the signal inputs of the first and second amplifiers, respectively, the second output of the distribution block is connected to the first input of the control register, the first output of which is connected to the second input of the first block of keys, and through the block of inverters. to the second input of the second block of keys , the output of the comparison unit is connected to the second · with the input of the control register, the third output of the distribution unit and the second output of the control register are outputs of the converter, characterized in that the growth of the Converter, the outputs of the first and second resistive matrices are connected to the inputs of the comparison unit.