Brake-controllable brushless motor

Details Brake-controllable brushless motor Brake-controllable brushless motor

2008-03-12

2010-10-19

Masih, Karen (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

Brushless motor closed-loop control

C318S400130, C318S400100

Reexamination Certificate

active

07816877

ABSTRACT:
A brake-controllable brushless motor has a rotor and a stator having polyphase coils; a polar position detector whereby electric power is supplied to the coil selected by its phase in response to the polar positions of the rotor detected by the polar position detector; a driver division for controlling the electric supply to the coils; a motor pulse identifier for recognizing motor pulse signals fed from the polar position detector; and a delayed pulse generator for producing phase-delayed pulse signals in response to the pulse signals fed from the motor pulse identifier, thereby ensuring that when the brushless motor is braked, the phase delay of the delayed pulse signals is progressively and continuously enlarged, and that the coils receive a controlled electric supply from the driver division in response to the delayed pulse signals.

REFERENCES:
patent: 6452349 (2002-09-01), Hahn et al.
patent: 2004/0183490 (2004-09-01), Maeda
patent: 2005/0024010 (2005-02-01), Tachibana
patent: 2008/0048598 (2008-02-01), Shibuya
patent: 2004-190709 (2004-07-01), None
patent: 2007-020588 (2007-02-01), None
patent: WO 2005/119898 (2005-12-01), None

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