Stepper motor control circuit

Details Stepper motor control circuit Stepper motor control circuit

1980-09-23

1982-11-09

Smith, Jr., David

Electricity: motive power systems

Open-loop stepping motor control systems

318685, G05B 1940

Patent

active

043587259

ABSTRACT:
A stepper motor control circuit for a step motor and step motor control which has substantially higher efficiency than the motors and the control circuits of the prior art and which uses a chopper current control and phase control for each of the two phases of a two phase step motor and wherein each phase has two separate windings that are magnetically coupled together. The invention provides a three step switching sequence which produces different current paths in each step so that a higher operating efficiency is achieved than circuits in the prior art.

REFERENCES:
patent: 3750000 (1973-07-01), Bruckner et al.
patent: 3812413 (1974-05-01), Keidl
patent: 3826966 (1974-07-01), Nagasaka et al.
patent: 4129816 (1978-12-01), Feldy et al.
patent: 4293807 (1981-10-01), Foster et al.

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