DC Motor

Details DC Motor DC Motor

1980-04-04

1983-08-02

Smith, Jr., David

Electricity: motive power systems

Switched reluctance motor commutation control

318138, H02K 2100

Patent

active

043968759

ABSTRACT:
A DC motor comprises a stator, a rotor adapted to rotate about an axis with respect to the stator, two coil windings mounted on one of the stator and rotor and separated by an electrical angle of N.times.90.degree. where N is an odd integer, a permanent magnet having a plurality of pairs of magnetic pole pieces of opposite polarity mounted on the other of the stator and rotor, a position magnet mounted on one of the stator and rotor for generating a sinusoidal magnetic flux signal, a magnetic reluctance element mounted on the other of the stator and rotor for detecting the sinusoidal magnetic flux signal and generating a control signal proportional to sin.sup.2 .theta. in response thereto where .theta. is an angle corresponding to the rotational position of the rotor, first and second amplifiers for producing drive signals proportional to sin.sup.2 .theta. and cos.sup.2 .theta., respectively, in response to the control signal, and a switching device for energizing one of the two windings with the drive signal proportional to sin.sup.2 .theta. and for energizing the other of the two windings with the drive signal proportional to cos.sup. 2 .theta. with the direction of current flow through the two windings being periodically alternated in correspondence with the rotational position of the rotor so as to rotate the rotor about its axis.

REFERENCES:
patent: 3440506 (1969-04-01), Krestel et al.
patent: 3959705 (1976-05-01), Salihi
patent: 4015181 (1977-03-01), Karube et al.
patent: 4096419 (1978-06-01), Wren et al.
patent: 4242608 (1980-12-01), Ishigaki et al.

Affiliated with

Also associated with

Rating

DC Motor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with DC Motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and DC Motor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-485925