SU367547A1 - CONVERTER "ANGLE - CODE" - Google Patents

Description

one

The invention relates to automatic control and can be used to communicate the measured analog value, represented as the angle of rotation of the input shaft with a digital computing device.

The known angle-code converters containing a phase shifter, a phase shifter powering circuit, a time interval former, a pulse generator, a gate, a counter, an AND circuit, a quartz frequency generator, have low accuracy.

The purpose of the invention is to improve the accuracy of the angle-to-code converter.

For this purpose, a trigger, a count of the number of measurements and a synchronization circuit are entered into it, the first input of which is (connected to the first output of the time interval generator, and another output of the latter is connected to the first AND circuit, the output of which is connected to the second input of the synchronization circuit, the output of the synchronization circuit is connected to another circuit “And to the input of the counter of the number of measurements, the output of the latter through a trigger is connected to the second input of the First circuit“ I.

The drawing shows the block diagram of the proposed (Converter.

The output signal of the fragrance sensor of the type of sine-cosine rotary transformer (phase shifter) / is fed to the converter phase difference - time / second interval (time interval generator) 2, at one of the outputs of which the start pulse is generated, coming through the circuit "And 3 to the input of the synchronization circuit 4 , at the other output, a stop pulse is generated, which comes directly to the second input of the synchronization circuit 4. The output of the synchronization circuit 4 controls the operation of the AND circuit, giving permission for the passage of pulses from the generator to and 6 pulses to the counter 7. In addition, the number of output pulses of the synchronization circuit 4 is counted by the counter 8 of the number of measurements, the output of which is connected to the input "About trigger 9. The input" 1 trigger 9 receives the start signal from the W strip. The trigger output 9 is controlled The operation of the circuit "AND 3". To form signals of the phase shifter, the oscillator 11 of the quartz frequency is inputted, the output signal of which is fed to the power supply circuit 12. The frequencies of oscillators 6 and 11 are multiples. When a measurement signal arrives on bus 0, trigger 9 opens the circuit "And 3, and the start-impulses arrive at the synchronization circuit 4, intended to eliminate the possible error of measurement when going through an integer number of pole divisions of the phase-reversal /, i.e. and stop them pulses within one measurement cycle. Counting the number of measurements per cycle

performed by the counter 8. When the counter 8 overflows, the trigger 9 is flung and closes the & 3 circuit, terminating the measurement cycle. During the measurement cycle, cxe.via "And 5 periodically opens to allow the pulses of the generator 6 to flow in accordance with the time intervals determined by the synchronization circuit 4.

Subject invention

Angle converter is a code containing a phase shifter, a phase shifter powering circuit, a time interval former, a pulse generator, a valve, a counter, an AND circuit, a quartz frequency generator, characterized in that, in order to improve accuracy, a trigger is introduced, a count of measurements and the synchronization circuit, the first input of which is connected to the first output of the time interval shaper, and the other output of the latter is connected to the first AND circuit, the output of which is connected to the second input of the synchronization circuit, the output of the C circuit The synchronization is connected to another circuit “And to the input of the counter of the number of measurements, the output of the latter through a trigger is connected to the second input of the first circuit“ I.