Electricity: motive power systems – Switched reluctance motor commutation control
Patent
1997-02-07
1998-10-27
Masih, Karen
Electricity: motive power systems
Switched reluctance motor commutation control
318599, 318439, 318138, 123399, H02K 2300
Patent
active
058281932
ABSTRACT:
An intake air amount control unit for an engine which is inexpensive and has excellent controllability is constituted such that a PWM duty signal output device calculates a phase current value to be applied to each stator winding of a brushless motor based on an opening difference between an actual opening of a throttle valve and a target opening of the throttle valve and outputs a PWM duty signal corresponding to this calculated phase current value. A rotor magnetic pole position learning device detects and learns a magnetic pole position of a rotor of the brushless motor, and an energization stator winding determining device determines a stator winding to be energized from an opening of the throttle valve and the above learned value. A motor drive device supplies a current to the brushless motor based on the above PWM duty signal and an energization phase selection signal corresponding to the determined stator winding to be energized.
REFERENCES:
patent: 5463298 (1995-10-01), Kamio et al.
patent: 5501201 (1996-03-01), Miyoshi et al.
patent: 5606950 (1997-03-01), Fujiwara et al.
patent: 5669351 (1997-09-01), Shirai et al.
Masih Karen
Mitsubushi Denki Kabushiki Kaisha
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