Speed control system for repulsion motor

Electricity: motor control systems – Closed loop speed control system for dc motor with commutator – Armature control by digital or combined analog and digital...

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Details

318725, 318254, 318138, 318439, 318724, 318700, 318720, 318721, 318726, H02P 528

Patent

active

061084883

ABSTRACT:
A speed control system for a brushless repulsion motor of the type including a series of armature mounted switches for shorting circumferentially spaced armature coils, said system comprising: a digital counter on the armature for creating a repetitive succession of switch activating signals in a selected sequence at a given rate determined by the counting rate of the counter; means for activating the switches with the signals in the sequence and at the rate to control the speed of the armature; and, means for directing a reference pulse signal at a reference frequency to the counter to set the counting rate of the counter.

REFERENCES:
patent: 5686805 (1997-11-01), Haner
patent: 5767601 (1998-06-01), Uchiyam

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