Electricity: motive power systems – Synchronous motor systems – Brushless motor closed-loop control
Reexamination Certificate
2007-05-30
2010-12-14
Benson, Walter (Department: 2837)
Electricity: motive power systems
Synchronous motor systems
Brushless motor closed-loop control
C318S368000, C318S459000, C318S490000, C318S805000
Reexamination Certificate
active
07852027
ABSTRACT:
A method for testing a motor having a rotor and a winding is provided. The method includes steps of (a) providing a power to rotate the rotor to a predetermined speed, (b) removing the power, (c) measuring a terminal voltage of the winding while a current within the winding is zero, (d) obtaining a back electromotive force in the winding by compensating the terminal voltage with a performance of the rotor, (e) selecting a characteristic of the back electromotive force and (f) determining a magnetization of the motor by comparing the characteristic with a predetermined parameter.
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Huang Shih-Ming
Huang Wen-Shi
Jin Wan-Bing
Wu Li-Jian
Yang Jian-Ping
Benson Walter
Delta Electronics , Inc.
Paul Antony M
Volpe and Koenig P.C.
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