D.C. Motor speed control

Details D.C. Motor speed control D.C. Motor speed control

1979-06-12

1981-05-05

Smith, Jr., David

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318308, 318636, H02P 516

Patent

active

042661684

ABSTRACT:
A D.C. motor speed control uses the motor as both the prime mover and feedback element. The motor back e.m.f. is sampled periodically to generate a feedback signal which is not dependent on motor characteristics for the control loop dynamic response. An adaptive positive feedback control loop is employed.

REFERENCES:
patent: 3515971 (1970-06-01), Joslyn et al.
patent: 3671835 (1972-06-01), McMenamy et al.
patent: 3708737 (1973-01-01), Johnson
patent: 3818297 (1974-06-01), Ha et al.

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