Driving and control system for D.C. motors

Details Driving and control system for D.C. motors Driving and control system for D.C. motors

1974-01-09

1976-06-22

Rubinson, Gene Z.

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318317, 318391, 318432, H02D 506

Patent

active

039654052

ABSTRACT:
A direct current motor driving and control system comprising a permanent-magnet direct-current motor with a rotor winding not having an iron core, a source of a reference voltage which rises in magnitude with a certain slope to a normal running level in response to a start command and falls again with a certain slope in response to a stop command, a drive circuit responsive to the reference voltage for feeding energizing current to the rotor winding, a resistor in series with the motor arranged to develop a feedback voltage proportional to the speed of the motor and a combining circuit arranged to apply the feedback voltage to act in combination with the reference voltage to establish a positive feedback action serving to compensate variations of the speed of the motor.

REFERENCES:
patent: 3568027 (1971-03-01), Bacon
patent: 3593075 (1971-07-01), Pantelakis
patent: 3617715 (1971-11-01), Dummermuth
patent: 3708737 (1973-01-01), Johnson
patent: 3732472 (1973-05-01), Favre
patent: 3808482 (1974-04-01), Wagensonner et al.
patent: 3878446 (1975-04-01), Brandt

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