Controller for DC brushless motor

Details Controller for DC brushless motor Controller for DC brushless motor

2005-01-04

2005-01-04

Leykin, Rita (Department: 2837)

Electricity: motive power systems

Switched reluctance motor commutation control

C318S132000, C318S434000, C318S721000

Reexamination Certificate

active

06838843

ABSTRACT:
A motor controller implements alternately a feedback control for d axis current and a feedback control for q axis current using an estimate value of a rotor angle in different control cycles. Then, the motor controller calculates a sine reference value which corresponds to a sine value of an angle which is twice a phase difference between an actual value and an estimate value of a rotor angle and a cosine reference value which corresponds to a cosine value of the angle which is twice the phase difference based on variations of the d axis actual current and q axis actual current and levels of d axis voltage and q axis voltage in a control cycle in which feedback controls are implemented for d axis current and q axis current and detects a rotor angle using the sine reference value and the cosine reference value so calculated.

REFERENCES:
patent: 5635810 (1997-06-01), Goel
patent: 5689165 (1997-11-01), Jones et al.
patent: 6005364 (1999-12-01), Acarnley
patent: 6081087 (2000-06-01), Iijima et al.
patent: 6157150 (2000-12-01), Konecny
patent: 6462491 (2002-10-01), Iijima et al.
patent: 20020149335 (2002-10-01), Imai et al.

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