Linear motor control system for brushless DC motor

Details Linear motor control system for brushless DC motor Linear motor control system for brushless DC motor

1981-04-22

1982-10-05

Truhe, J. V.

Electricity: motive power systems

Switched reluctance motor commutation control

318138, 318439, H02K 2902

Patent

active

043530168

ABSTRACT:
A linear motor control system for a brushless DC motor is disclosed wherein a plurality of rotor position sensors are provided together with a means for selecting a first or second group of those sensors, thus enabling alternate sets of position signals to be selected depending upon motor speed. These respective sensor signals are then processed through a filter network to provide sinusoidal motor drive signals which continuously modulate motor winding currents to provide linear speed control, thereby resulting in an appreciable decrease in acoustical noise produced by the motor.

REFERENCES:
patent: 3144574 (1964-08-01), Henry-Baudot
patent: 3706923 (1974-12-01), Dunfield
patent: 3839661 (1974-10-01), Wada
patent: 3896357 (1975-07-01), Tanikoshi
patent: 4119895 (1978-10-01), Muller
patent: 4228384 (1980-10-01), Arnold et al.
Dana F. Geiger, "Notes on PMI Brushless Motor Development", 4/11/78.

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