Brushless motor with torque compensation

Details Brushless motor with torque compensation Brushless motor with torque compensation

1988-05-18

1991-04-02

Ro, Bentsu

Electricity: motive power systems

Switched reluctance motor commutation control

318138, H02P 602

Patent

active

050049658

ABSTRACT:
There is disclosed a brushless motor provided with a speed detector for detecting the rotating speed of rotor; a synthesizer for synthesizing the output wave forms of inverse electromotive force of different phases of the brushless motor; a detector for detecting the synthesized wave form from the synthesizer; an inverter for inverting the detected wave form from the detector; an oscillator for generating a predetermined frequency; a frequency divider for dividing the frequency from the oscillator according to the output from the inverter; a counter for counting the clock output signal from the frequency divider, latching the count in a cycle of a signal from the speed detector and resetting the count; and a drive controller for generating a control voltage in response to the output from the counter thereby controlling the current supplied to the rotor.

REFERENCES:
patent: 4317072 (1982-02-01), Goof et al.
patent: 4348621 (1982-09-01), Hyldal
patent: 4486692 (1984-12-01), Sonoda et al.
patent: 4507590 (1985-03-01), Miyazaki
patent: 4538096 (1985-08-01), Kern
patent: 4546294 (1985-10-01), Ban et al.
patent: 4578606 (1986-03-01), Welterlin
patent: 4595865 (1986-06-01), Jahns
patent: 4651067 (1987-03-01), Ito et al.
patent: 4672274 (1987-06-01), Suganuma
patent: 4680515 (1987-07-01), Crook

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