Controlling a d.c. motor

Details Controlling a d.c. motor Controlling a d.c. motor

1982-06-10

1987-10-20

Weldon, Ulysses

Electricity: motive power systems

Motor-reversing

Field circuit control

318329, G05B 500

Patent

active

047016850

ABSTRACT:
A d.c. motor is controlled by means of current pulses; each pulse ends by and in synchronism with an optical disk pulse. The period between respective two pulses is referenced to a particular period for determining the sign of a speed derivation, and the result is used to change the length of the pause between two current pulses for the motor. Digital counters are used for time-metering purposes and selection of the pause length between current pulses.

REFERENCES:
patent: 3176208 (1965-03-01), Gifft
patent: 3386021 (1968-05-01), Fischer
patent: 3784890 (1974-01-01), Geiersbach et al.
patent: 3953776 (1976-04-01), Wolf
patent: 4375609 (1983-03-01), Wolf
patent: 4376914 (1983-03-01), Kimura

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