SU842905A1 - Multichannel shaft angular position-to-code converter - Google Patents

Description

The invention relates to automation and computing technology and can be used in devices that convert information about the angular displacements of sensors into a code. The known angle-to-disk converter contains sine-cosine transformers, whose input is supplied with a reference voltage, and the sine and cosine outputs are connected via switches to the inputs of the sine and cosine integrators, respectively, whose control inputs are connected to the output of the integrator's start and stop, the outputs of the integrator are connected to the inputs of the voltage ratio converter in the P code. Such a converter has an insufficient speed, due to the specifics of the work of the integrators; The closest in terms of technical cyniHOCTH to the proposed one is the multi-shaft converter of the angle of rotation of the shaft into a code containing sine-cosine sensors connected to the inputs of the selection switch, the outputs of which are connected To the inputs of the voltage ratio converter in the code whose control input is connected to the output the reference voltage selection block, the transducer encodes the time-varying magnitude, which is inevitably due to additional errors in determining the angle and presents The above performance requirements of the voltage ratio converter in code C 21. The disadvantages of the converter are insufficient accuracy and speed. The circuit of the invention is an increase in the accuracy and speed of the multichannel converter of the angle of rotation of the shaft into a code. The goal is achieved by the fact that in a multi-channel converter

the angle of rotation of the shaft into the code containing the sine-cosine sensors connected to the input of the selection switch, the reference voltage extraction unit, and the voltage ratio converter in the code, the control unit, is entered. a read switch and two multi-channel memories, the inputs and outputs of which are connected respectively to the outputs of the select switch and the inputs of the switch switch whose outputs are connected to the signal inputs of the voltage ratio converter in the control code, whose input is connected to the first output of the control unit, the other outputs of which are connected respectively, with the control inputs of the selection switch, read switch and multichannel storage devices, and the input of the control block with the output of the zero-voltage reference block.

The drawing shows the functional diagram of the multichannel converter of the angle of rotation of the shaft into the code

The proposed converter contains a control unit 1, the input of which is connected to the output of the block 2 and the reference voltage zero, sine-cosine sensors 3 connected to the inputs of the selection switch 4, the outputs of which are connected to the inputs of multi-channel storage devices 5, the outputs of which are connected to the inputs the switch 6 is readout of a voltage ratio connected to the converter in a code (TLC) 7.

The operation of the converter is as follows.

The control unit 1, based on a signal from the allocation unit 2, the zero of the reference voltage forms a series of control switch 4 and multi-channel storage devices (MU) 5.

This series of comavds represents a sequence of pulsed signals, which are used to make a synophonic recording of sine and cosine voltages from sine-cosine sensors 3 to the corresponding memory elements of the multi-channel memory 5,

During one period of the frequency of the reference voltage, the signals of all the sine-cosine sensors 3 are stored in the small slope region and the information is stored in the memory 5.

The formation of control commands for the switch 4 of choice and the multi-channel memory 5 is carried out continuously, cyclically. Information in memory 5 is updated either in each period of the reference voltage, or once in several periods, depending on external control signals.

By the address signal, generated by my control unit 1 and acting on the read switch 6, the corresponding outputs of the charger 5 are connected to the inputs of the OST 7 and the signal voltages of the selected channel are sent for encoding into the OST. 7. Address signals can be generated regardless of Memory 5 for a given program, either from external devices;

Thus, the synchronous recording and storage of the memory of the 5 sine and cosine voltages allows to significantly reduce errors in the angle determination, because the PANC 7 encodes signals that do not vary in time. Provided the use of OST 7 with a speed exceeding the duration of the reference voltage period, the processing speed of the signals of all channels can be significantly increased.

Claims (1)

Invention Formula A multichannel shaft rotation angle converter into a code containing sine-cosine sensors connected to the input of the selection switch, a reference voltage selection block and a voltage ratio converter converting the code into a code, so that, in order to increase accuracy and speed prevail; a control unit, a read switch and two multichannel storage devices, the inputs and outputs of which are connected respectively to the outputs of the select switch and the inputs of the switch switch, whose outputs are connected to the signal inputs of the voltage ratio converter in a code that controls the input of which is connected to the first output of the control unit, the remaining outputs of which are connected respectively to the control inputs of the selection switch, read switch and multichannel memory x