Chopper controller for a D.C. motor

Details Chopper controller for a D.C. motor Chopper controller for a D.C. motor

1984-09-19

1986-04-01

Shoop, Jr., William M.

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318139, 318257, 318274, 318345E, H02P 516

Patent

active

045800839

ABSTRACT:
A chopper controller for a D.C. motor controls currents flowing in an armature winding and a field winding of the D.C. motor by controlling an armature chopper and a field chopper in accordance with a command from a command generator such as an accelerator pedal. The armature chopper and the field chopper are controlled by chopper control signals from an armature chopper control circuit and a field chopper control circuit, respectively. Those chopper control signals are in a predetermined phase relationship and an interruption request signal is issued in phase-synchronism with one of the chopper control signals. In response to the interruption request signal, computing means computes an armature chopper duty factor and a field chopper duty factor in accordance with the command from the command generator and supplies them to the chopper control circuits.

REFERENCES:
patent: 3950684 (1976-04-01), Peterson
patent: 4153863 (1979-05-01), Schachte et al.
patent: 4189667 (1980-02-01), Boxer
patent: 4216417 (1980-08-01), Anderson et al.
patent: 4284932 (1981-08-01), Kawada et al.
patent: 4366420 (1982-12-01), Omae et al.
patent: 4500820 (1985-02-01), Noto et al.
A. K. Lin et al, "A Microprocessor Speed Control System", IECI '77 Proceedings Industrial Electronics and Control Instrumentation, Mar. 21-23, 1977, pp. 144-151.
B. K. Bose et al, "A Microcomputer Based Real Time Feedback Controller for an Electric Vehicle Drive System", IAS '79:25F, 1999, 25F, pp. 743-748.

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