Circuit for driving a stepping motor

Details Circuit for driving a stepping motor Circuit for driving a stepping motor

1983-09-13

1985-07-16

Shoop, William M.

Electricity: motive power systems

Open-loop stepping motor control systems

318685, H02K 2904

Patent

active

045299234

ABSTRACT:
A circuit for driving a stepping motor comprises a sensor for detecting when the stepping motor is in a hold position, a counter for counting an output from the sensor, a hold pulse pattern generator for generating a hold pulse pattern to hold the stepping motor in the hold position, a shift circuit for shifting the hold pulse pattern from the hold pulse pattern generator, an inverter circuit for inverting hold pulse pattern from the hold pulse pattern generator, and a comparator for comparing an output from the counter with a reference value and producing an output to select one of the hold pulse pattern from the hold pulse pattern generator, a shifted hold pulse pattern from the shift circuit, and an inverted hold pulse pattern from the inverter circuit.

REFERENCES:
patent: 3893012 (1975-07-01), Lin
patent: 4262240 (1981-04-01), Arqi
patent: 4293233 (1981-10-01), Hoffman
patent: 4297626 (1981-10-01), Chiang
Proceedings Eleventh Annual Symposium on Incremental Motion Control, Systems and Devices, May 1982, p. 295, Kno and Butts.

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