Motor driving system for driving brushless motor

Details Motor driving system for driving brushless motor Motor driving system for driving brushless motor

1997-07-29

1999-10-19

Ip, Paul

Electricity: motive power systems

Switched reluctance motor commutation control

318439, 318138, H02K 2902, H02P 602

Patent

active

059694890

ABSTRACT:
A motor driving system for a brushless motor is comprised of a drive magnet, a rotor provided with the drive magnet and supported by the shaft, 3-phase stator coils provided on a substrate and facing to the drive magnet, two Hall elements exposed to magnetic fluxes of the drive magnet and outputting Hall signals having a 120 degrees phase difference, an amplitude control device for equalizing an amplitude difference between the Hall signals and outputting equalized Hall signals, a signal compounding device for compounding the equalized Hall signals and outputting a compound signal, a drive circuit for switching drive currents to be supplied to the 3-phase stator coils in response to the equalized Hall signals and the compound signal.

REFERENCES:
patent: 4418303 (1983-11-01), Abe et al.
patent: 4633150 (1986-12-01), Inaji et al.
patent: 4658190 (1987-04-01), Miyazaki et al.
patent: 5160873 (1992-11-01), Tukiyama et al.

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