DC Motor servo system

Details DC Motor servo system DC Motor servo system

1982-08-05

1985-01-15

Witkowski, Stanley J.

Electricity: motive power systems

Switched reluctance motor commutation control

318138, H02P 506

Patent

active

044940521

ABSTRACT:
A system for controlling the speed of a brushless DC motor includes a microprocessor for generating stator control drive signals responsive to Hall sensors detecting relative rotor-pole-stator positions. Hall sensor signal transistions are compared against a reference frequency to provide an error signal which is processed by the microprocessor in accordance with a transfer function to emulate a type II servo loop. Stator commutation control signals are reduced in duration proportional to the resulting processed error signal. The control signals are thereafter applied to integrating current drives energizing the stator coils with triangular current signals.

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patent: 4386298 (1983-05-01), Toshimitu

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