Linear pulse width to current converter for brushless DC motors

Details Linear pulse width to current converter for brushless DC motors Linear pulse width to current converter for brushless DC motors

1983-07-26

1985-03-26

Witkowski, Stanley J.

Electricity: motive power systems

Switched reluctance motor commutation control

318138, 318318, 318439, H02P 602

Patent

active

045075913

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 transitions are compared against a reference frequency to provide an error signal which is processed by the microprocessor. Stator commutation control signals are provided dependent upon the Hall sensor signal transitions. A control signal along with the commutation control signals are thereafter applied to integrating current drivers which provide substantially rectangular current pulses to the stator coils.

REFERENCES:
patent: 4096419 (1978-06-01), Wren et al.
patent: 4158795 (1979-06-01), Tarumi et al.
patent: 4356437 (1982-10-01), Saito et al.
patent: 4358720 (1982-11-01), Abe
patent: 4418303 (1983-11-01), Abe et al.

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