DC Motor drive system

Electricity: motive power systems – Limitation of motor load – current – torque or force

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Details

318332, 318432, H02P 516

Patent

active

042687810

ABSTRACT:
An actual speed N of a DC motor and an armature current Ia are detected to detect the motor output N.times.Ia. The motor speed is changed so that the detected motor output may not exceed a predetermined value. The spark generation of the motor brush is prevented when an over load is applied to the motor.

REFERENCES:
patent: 3421065 (1969-01-01), Stabile
patent: 3515971 (1970-06-01), Joslyn et al.
patent: 3716772 (1973-02-01), Larson
patent: 3735226 (1973-05-01), Pittner
patent: 3887855 (1975-06-01), Klimo
patent: 3950684 (1976-04-01), Peterson

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