Brushless commutated torque motor for use with a rotary low freq

Details Brushless commutated torque motor for use with a rotary low freq Brushless commutated torque motor for use with a rotary low freq

1998-10-02

2000-10-17

LaBalle, Clayton

Electrical generator or motor structure

Dynamoelectric

Rotary

310 68B, 310 68E, 310179, 310103, 310156, 318254, 318138, 318203, H02K 1100

Patent

active

061336564

ABSTRACT:
A brushless commutated torque motor suitable for use with a rotary low frequency sound reproducing apparatus, includes a shaft having a longitudinal axis, a position sensor, a rotor having a plurality of permanently magnetized rotor pole sectors, the rotor being mounted for rotation upon the shaft, and a stator having a plurality of stator poles and stator winding slots disposed alternately therein, the stator slots having stator windings therein driven by individual power amplifiers in response to a control signal, the stator having commutation between stator windings controlled by sensing of rotor angular position by the position sensor, with each rotor pole sector being configured and disposed such that a plurality of stator poles are axially adjacent to each rotor pole sector and each rotor pole sector is angularly separated from adjacent rotor pole sectors by a selective number of stator poles.

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patent: 5428276 (1995-06-01), Carobolante et al.
patent: 5825901 (1998-10-01), Hisey
patent: 5838122 (1998-11-01), Vu

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