Brushless DC motor

Details Brushless DC motor Brushless DC motor

1986-12-03

1987-10-27

Shoop, Jr., William M.

Electricity: motive power systems

Switched reluctance motor commutation control

318138, 318439, H02K 2912

Patent

active

047032359

ABSTRACT:
A brushless DC motor employs a set of coils positioned around the motor axis to respond to an aximuthal pattern of changing eddy current sensitivity. Rf voltage is frequency-multiplexed on the motor power leads at a frequency that does not affect motor operation. Rf voltage measurement circuits located remotely from the motor respond to the changing coil impedance to generate signals representing the azimuthal position of the motor rotor, that control a set of commutation circuits.

REFERENCES:
patent: 4612486 (1986-09-01), Ban et al.

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