Control system for brushless DC motor

Details Control system for brushless DC motor Control system for brushless DC motor

1987-01-30

1987-12-08

Ro, Bentsu

Electricity: motive power systems

Switched reluctance motor commutation control

318138, H02K 2906

Patent

active

047120509

ABSTRACT:
A control system for brushless DC motors detects counter electromotive force voltages induced in motor windings and produces rotor position detection signals from the counter electromotive force voltages. The maximum value of an input DC current to a motor drive circuit is held and the phase of the rotor position detection signals is changed in accordance with the held value of the input DC current to prevent the phase of the position detection signals from varying with the load on the brushless DC motor.

REFERENCES:
patent: 3611081 (1971-10-01), Watson
patent: 4129808 (1978-12-01), Bregeault et al.
patent: 4495450 (1985-01-01), Tokizaki et al.
patent: 4608527 (1986-08-01), Glennon et al.
patent: 4644234 (1987-02-01), Nola

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