Electricity: motive power systems – Synchronous motor systems – Brushless motor closed-loop control
Reexamination Certificate
2011-01-11
2011-01-11
Ro, Bentsu (Department: 2837)
Electricity: motive power systems
Synchronous motor systems
Brushless motor closed-loop control
C318S254100, C318S738000, C388S800000, C388S801000
Reexamination Certificate
active
07868570
ABSTRACT:
A controller of a brushless DC electric machine having a rotor and at least a stator winding powered by a driving voltage is provided. The controller includes a position sensor, an advance angle control circuit, and a driving circuit. The position sensor is moved along a reverse rotating direction of the rotor by a prepositioned angle for outputting a position signal. The advance angle control circuit receives the position signal and a driving voltage reproduction signal reproduced from the driving voltage and outputs a commutation control signal lagging the position signal by a first delay time. The driving circuit receives the commutation control signal for outputting a driving signal for controlling a commutation of the brushless DC electric machine.
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Huang Shih-Ming
Huang Wen-Shi
Jin Wanbing
Ni Jian
Wu Lijian
Delta Electronics , Inc.
Glass Erick
Ro Bentsu
Volpe and Koenig P.C.
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