Electricity: motive power systems – Switched reluctance motor commutation control
Patent
1993-08-26
1994-11-22
Shoop, Jr., William M.
Electricity: motive power systems
Switched reluctance motor commutation control
318138, 318439, H02P 506
Patent
active
053672348
ABSTRACT:
Control circuitry for a brushless direct current motor is premised on constructing phase to phase back emf signals representing the differences between the back electromotive force efforts produced in each phase winding of the motor. The phase to phase back emf signals are used to produce logic level signals having logic level changes at the zero voltage crossover points of the phase to phase back emf signals. Detection of the zero voltage crossover points is dictated by selectively activated comparator circuits. A method is also disclosed as to how the values of certain circuit elements may be derived.
REFERENCES:
patent: 4136308 (1979-01-01), King
patent: 4262236 (1981-04-01), Gelenius
patent: 4262237 (1981-04-01), Gelenius
patent: 4446406 (1984-05-01), Uzuka
patent: 4459519 (1984-07-01), Erdman
patent: 4491772 (1985-01-01), Bitting
patent: 4494054 (1985-01-01), Pelligrini
patent: 4651067 (1987-03-01), Ito et al.
patent: 4651069 (1987-03-01), Pelligrini
patent: 4678973 (1987-07-01), Elliott et al.
patent: 4694210 (1987-09-01), Elliott et al.
patent: 4743815 (1988-05-01), Gee et al.
patent: 4857814 (1989-08-01), Duncan
patent: 4928043 (1990-05-01), Plunkett
patent: 4970445 (1990-11-01), Kimura et al.
patent: 5187419 (1993-02-01), DeLange
patent: 5202614 (1993-04-01), Peters et al.
patent: 5221881 (1993-06-01), Cameron
patent: 5245256 (1993-09-01), Cassat et al.
B. C. Kuo & K. Butts, "Closed-Loop Control of a 3.6.degree. Floppy-Disk Drive PM Motor by Back-EMF Sensing", Proceedings, Eleventh Annual Symposium on Incremental Motion Control Systems and Devices, May, 1982.
SRL Inc. Quarterly Report, "Research on the PDM 253/25 Step Motor" Mar., 1980.
W. C. Lin, B. C. Kuo & U. Goerke, "Waveform Detection of Permanent-Magnet Step Motors", Parts I & II, Proceedings of Eighth Annual Symposium on IMCSD Mar. 1979, pp. 227-256.
Martin David
Shoop Jr. William M.
LandOfFree
Control system for sensorless brushless 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 Control system for sensorless brushless DC motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control system for sensorless brushless DC motor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1993199