Brushless DC printed motor

Details Brushless DC printed motor Brushless DC printed motor

1978-05-08

1980-10-14

Truhe, J. V.

Electricity: motive power systems

Switched reluctance motor commutation control

318138, 310268, H02K 2900

Patent

active

042283841

ABSTRACT:
A bidirectional, axial air gap, brushless, printed circuit DC motor having a stationary, low inductance armature bonded to the motor frame and having a plurality of rotating permanent magnets. Electro-optical sensing is employed which produces a unique digital representation of the magnet position. The digital output of the electro-optical sensor is decoded and, using brush substitution techniques, is used to selectively and progressively energize fields in the armature winding ahead of the rotating magnets. Both single field per pole and multiple field per pole commutation techniques are taught. The armature may be cut so as to produce several independent coils which may be combined in various ways, depending on the application.

REFERENCES:
patent: 3480815 (1969-11-01), Knapp
patent: 3566727 (1971-03-01), Weiss et al.
patent: 3706924 (1972-12-01), Adler
patent: 3845339 (1974-10-01), Merkle et al.
patent: 3946292 (1976-03-01), Tanikoshi
patent: 4005347 (1977-01-01), Erdman
patent: 4039912 (1977-08-01), Wada

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