Brushless DC motor

Details Brushless DC motor Brushless DC motor

1983-07-15

1985-03-26

Truhe, J. V.

Electricity: motive power systems

Switched reluctance motor commutation control

318313, 318602, H02P 602

Patent

active

045075905

ABSTRACT:
A brushless DC motor utilizing only a single position detector and which provides a uniform torque output characteristic with little or no vibration. N phase drive coils are fixedly mounted on a stator yoke. A magnetic rotor assembly, which is rotated by the drive coils, is coupled to rotate a rotary encoder on which m tracks of digitally coded waveform data are recorded. A single m-channel stationary detecting element detects the waveform data produced by rotating the rotary encoder to provide an m-bit parallel signal. The m-bit parallel signal is code converted and applied through power amplifiers to drive the drive coils.

REFERENCES:
patent: 3324369 (1967-06-01), Markakis
patent: 3345547 (1967-10-01), Dunne
patent: 3378741 (1968-04-01), Sutton
patent: 3753067 (1973-08-01), Milligan
patent: 3766458 (1973-10-01), Nishimura et al.
patent: 4107594 (1978-08-01), Jacobs
patent: 4223261 (1980-09-01), White

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