Electricity: motive power systems – Synchronous motor systems – Brushless motor closed-loop control
Reexamination Certificate
2008-07-15
2008-07-15
Duda, Rina I (Department: 2837)
Electricity: motive power systems
Synchronous motor systems
Brushless motor closed-loop control
C318S400380, C318S400010
Reexamination Certificate
active
07400105
ABSTRACT:
A motor drive device having a motor drive unit, a controller, and a rotational detector. The motor drive unit drives a brushless DC motor, the brushless DC motor has a rotor. The controller produces a motor driving signal to drive the brushless DC motor. The a rotational detector detects a rotational state of the brushless DC motor to produce a rotational state signal. The controller receives the rotational state signal from the rotational detector, determines a phase-switching timing to switch a phase of the brushless DC motor based on the rotational state signal, and transmits the phase-switching timing as the motor driving signal to the motor driver.
REFERENCES:
patent: 4712118 (1987-12-01), Seto et al.
patent: 4808901 (1989-02-01), Sakamoto
patent: 6297603 (2001-10-01), Carobolante
patent: 7109673 (2006-09-01), Okamoto
patent: 04-106515 (1992-04-01), None
patent: A 9-34332 (1997-02-01), None
patent: 10-073780 (1998-03-01), None
patent: A 2000-316289 (2000-11-01), None
patent: A 2001-61297 (2001-03-01), None
patent: A 2002-374694 (2002-12-01), None
Okamoto Hisanori
Sugimoto Tasuku
Brother Kogyo Kabushiki Kaisha
Duda Rina I
Oliff & Berridg,e PLC
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