SU627499A1 - Multichannel shaft angular position-to-code converter - Google Patents

Description

(54) MULTICHANNEL CONVERTER ANGLE OF TURNING

BALA IN CODE

This invention relates to automation and computing.

Multichannel phaseometric transducers of the angle of rotation of the shaft into a code are known, which contain sine-cosine transforms, a power source, a switch, a phase-shifting circuit, two zero-organs, a time interval meter, a control circuit, two emitter repeaters flj.

The disadvantage of such converters is a large dynamic error with a large number of channels.

A multichannel shaft angle converter into a code is known that contains sine-cosine rotating transformers combined into groups, a clock pulse generator, a phase detector, a low-pass filter, a simple generator, a counter, valves, a memory register, a strobe pulse former.

2 Presence of dynamic error

with a large number of channels from changes

input values are a disadvantage of the known converter.

The closest in technical essence to the invention is a multichannel converter of shaft rotation angle into a code containing a power supply unit connected to phase shifters and through one comparator to the first input of the synchronization unit, the outputs of phase shifters through other comparators are connected to the channel selector, the control input which is connected to the driver of the switching signals, and the output is connected to the second input of the synchronization unit, the control unit, the inputs of which are connected to the outputs of the synchronization unit and the generator pulses, and outputs connected to inputs ryuversivnogo counter, pulse generator output is connected to the third input of the synchronization unit 13.

Claims (3)

A disadvantage of the known converter is the presence of a dynamic error with a large number of channels due to changes in input values. The aim of the invention is to improve the accuracy of the converter by reducing the dynamic. when interrogating phase shifters with regard to changes in input quantities. The goal is achieved by the addition of shaper units, one inputs of which are connected and connected to an impedance generator, other inputs connected to the corresponding outputs of other comparators, and outputs connected to a switching signal shaper., The drawing shows the structural scheme of the device. The converter contains a pulse generator 1, a reversible counter 2, a control unit 3, a synchronization unit 4, one comparator 5, a power supply unit 6, a channel selector 7, phase shifters 8, circular comparators 9, a rotation generator 1O, a switching signal generator 11. The Converter operates as follows. From block 6, the supply voltage is supplied to the comparator 5, where the yurmirueehz impulses the reference phase, and neither the phase shifters in, at the output of which sinusoidal voltages are formed, shifted in phase relative to the input voltage, proostoichonal angles of rotation of the rotors of the phase shifters 8. Comparators S and 9 forecaster pulse at zero points in the period from the period to the positive half of the synergistic voltage. From the output of bpock 4, it synchronizes the pulse of the reference phase and one of the output results of the comparators 9, selected by the selector 7. KiKianoB, received in block 3 of the control forming the number of pulses. direct or additional code, equal to the rotation angle of the rotor selected by the selector 7 phase shifter 8.. The impulses of the direct or additionally tx) code from the output of the 3-control unit are fed to the summing or subtracting input of the reversible counter 2. Interrogation of phase shifters 8 with allowance for changes in input values is performed as follows. The output pulses of the comparators 9 are fed to the shaper 10 increments, which, when the angle of rotation of the phase shifters 8 changes, give out pulses for connecting this channel to the shaper 11, controlled by the order of optimal switching of the selector 7 channels. In case of coincidence of signals from the outputs of the drivers, 10 increments, the driver of the 11 switching signals generates a signal connecting the first channel, which has a shorter time between the adjacent increment pulses. Thus, the input values, taking into account their changes, reduce the dynamic error and, therefore, increase the accuracy of the conversion. Invention Multi-channel converter of shaft rotation angle into a code containing a power supply unit connected to the phase shift and through one comparator to the first input of the synchronization unit, phasers outputs through other comparators connected to the channel selector, the control input of which is connected to the forming switching signals , and the output is connected to the second / input of the synchronization unit, the control unit, the inputs of which are connected to the outputs of the synchronization unit and the pulse generator, and the outputs are connected to the inputs p versivnogo counter, pulse generator output is connected to the third input of the synchronization unit. It is characterized in that, in order to increase the accuracy of the converter, shapers of increments are introduced into it, one inputs of which are combined and connected to a pulse generator, other inputs are connected to the corresponding outputs of other comparators, and outputs are connected to a driver of switching signals. Sources / information taken into account during the examination: 1. Author's testimony of the USSR № 341063, cl. Q-08 C 9 / O4, 04.17.70. 2. USSR author's certificate number 461435, cl. Gt08 C 9/04, 1972. 3. The author's certificate of the USSR I 408356, cl. GT 08 C 9/00, 07/02/71.