Motor drive device

Details Motor drive device Motor drive device

2006-10-27

2010-11-16

Masih, Karen (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

Brushless motor closed-loop control

C318S034000, C318S364000

Reexamination Certificate

active

07834567

ABSTRACT:
A motor drive device for alternately driving a plurality of motors includes a position detection signal processing circuit for processing position detection signals of the plurality of motors, a pre-drive circuit for generating an excitation switching signal of the motors, a plurality of power switching circuits for supplying an electric current to the motors in response to an output from the pre-drive circuit, and a motor switching circuit for instructing a switchover of driving the motors. The position detection signal processing circuit, in response to an input signal to the motor switching circuit, selects a position detection signal of a motor to be driven out of the position detection signals of the plurality of motors, and inputs a position detection processed signal to the pre-drive circuit for selecting one of the plurality of power switching circuits.

REFERENCES:
patent: 7002315 (2006-02-01), Aono et al.
patent: 2004/0217724 (2004-11-01), Nagasawa et al.
patent: 1462914 (2003-12-01), None
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patent: 2001-286175 (2001-10-01), None
patent: 2003-202719 (2003-07-01), None
patent: 2005-65486 (2005-03-01), None
patent: 2005-257258 (2005-09-01), None
patent: WO 02/086883 (2002-10-01), None
International Search Report for PCT/JP2006/321467, dated Jan. 30, 2007.

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