DC Motor control system

Details DC Motor control system DC Motor control system

1979-04-23

1981-11-10

Smith, Jr., David

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318271, 318278, 318338, H02P 516

Patent

active

043000797

ABSTRACT:
A DC motor control system which has means for detecting the rise and fall of a drive command signal to generate an ON ACCELERATION/DECELERATION signal and means for generating a current limit signal for driving a DC motor by the ON ACCELERATION/DECELERATION signal to produce a rated output and for driving the DC motor to produce an output 1
times the rated output when the DC motor is switched from an acceleration state to a stationary state. When the DC motor is accelerated or decelerated by the drive command signal, a current for obtaining the rated output is applied to the armature of the DC motor and, in the stationary state, even when a load on the DC motor is maximum a current for obtaining an output 1
times the rated output is applied to the armature of the DC motor to reduce the output of the large-output DC motor, thereby providing an enlarged constant output DC motor range.

REFERENCES:
patent: 3309597 (1967-03-01), Gabor et al.
patent: 3359477 (1967-12-01), Wasai et al.
patent: 3405259 (1968-10-01), Sano
patent: 3471073 (1969-10-01), Brown et al.
patent: 3586946 (1971-06-01), Sadashige
patent: 3586949 (1971-06-01), Spear
patent: 3599064 (1971-08-01), Friedman
patent: 3706020 (1972-12-01), Klang
patent: 3735225 (1973-05-01), Raatz
patent: 3809452 (1974-05-01), Heinz
patent: 3904943 (1975-09-01), Klang
patent: 4109190 (1978-08-01), McNaughton
Gottlieb, I. M., Electric Motors & Electronic Motor Control Techniques, Howard Sams & Co., 1976, pp. 117-119.

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