Control apparatus for DC motor

Details Control apparatus for DC motor Control apparatus for DC motor

1976-07-30

1978-07-04

Smith, Jr., David

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318332, 318493, H02P 714

Patent

active

040991113

ABSTRACT:
In order to control a DC motor, a main circuit is constructed in such a manner that a unidirectional thyristor converter is connected to the armature of the motor, while a bilateral thyristor converter is connected to the field system of the motor. Provided is a speed controller which is impressed with a speed command signal and a speed feedback signal so that the speed controller produces an error signal representing the difference between the speed command signal and the speed feedback signal and the error signal is applied to a function generator which in turn produces a field current command signal and an armature current command signal. The field current command signal assumes a value proportional to the error signal when the error signal is less than a predetermined value. The armature current command signal is kept constant when the error signal is below a predetermined value, while it increases, when the error signal exceeds the predetermined value, in proportion to the amount of the excess. These current command signals are used to phase-control the thyristor converters in the field circuit and the armature circuit.

REFERENCES:
patent: 3735226 (1973-05-01), Pittner
patent: 4019107 (1977-04-01), Dixon et al.

Affiliated with

Also associated with

Rating

Control apparatus for DC motor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Control apparatus for DC motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control apparatus for DC motor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-279970