Control circuit for a pulse motor

Details Control circuit for a pulse motor Control circuit for a pulse motor

1980-03-18

1982-10-05

Truhe, J. V.

Electricity: motive power systems

Open-loop stepping motor control systems

318681, G05B 1940

Patent

active

043530214

ABSTRACT:
A control circuit is disclosed for operating a pulse motor which contains a first winding and a second winding. A first bridge can connect the first winding to a power source in two directions and can also disconnect the first winding therefrom. Likewise, a second bridge can so connect and disconnect the second winding from the power source. A sequencer operates the bridges so that such connection and disconnection takes place according to a predetermined sequence, in order to allow the motor to be rotated in discrete steps. A comparator stage compares current flowing through the first and second windings with an adjustable voltage reference, and regulates the bridges so as to regulate such current in accordance with a value to which the adjustable voltage reference has been adjusted. A means adjusts the adjustable voltage reference in accordance with the predetermined sequence. The control circuit reduces power consumption by the pulse motor and thereby allows a smaller torque pulse motor and a smaller power source to be utilized.

REFERENCES:
patent: 3824440 (1974-07-01), McIntosh
patent: 3893012 (1975-07-01), Lin
patent: 3909693 (1975-09-01), Yoshitake et al.
patent: 4163931 (1979-08-01), Seitz et al.

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