Brushless motor control system

Details Brushless motor control system Brushless motor control system

1992-04-13

1993-12-14

Ro, Bentsu

Electricity: motive power systems

Switched reluctance motor commutation control

318138, H02P 602

Patent

active

052706222

ABSTRACT:
An all-digital control system for a brushless, three-phase, DC motor includes a main signal processor in direct digital communication with a drive controller. The controller generates a pulse width modulated signal having a duty cycle established by the command signal. A three-phase bridge generates a two-state control signal in response to the pulse width modulated signal. The control signal has an on-state which lasts for the duty cycle. A digital tachometer signal indicative of motor speed or position is thereupon processed and reported back to the main processor.

REFERENCES:
patent: 4400654 (1983-08-01), Elliott
patent: 4415844 (1983-11-01), Mendenhall et al.
patent: 4680513 (1987-07-01), Kennedy
patent: 4680515 (1987-07-01), Crook
patent: 4701839 (1987-10-01), McNally et al.
patent: 4720663 (1988-01-01), Welch et al.
patent: 4786847 (1988-11-01), Daggett et al.
patent: 4868469 (1989-09-01), Chan
patent: 5079487 (1992-01-01), Malang

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