Invention Grant
US08436568B2 Motor drive apparatus and electric power steering system using the same
有权
电机驱动装置和电动助力转向系统采用相同的方式
- Patent Title: Motor drive apparatus and electric power steering system using the same
- Patent Title (中): 电机驱动装置和电动助力转向系统采用相同的方式
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Application No.: US13134023Application Date: 2011-05-26
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Publication No.: US08436568B2Publication Date: 2013-05-07
- Inventor: Yasuhiko Mukai , Hideki Kabune
- Applicant: Yasuhiko Mukai , Hideki Kabune
- Applicant Address: JP Kariya
- Assignee: Denso Corporation
- Current Assignee: Denso Corporation
- Current Assignee Address: JP Kariya
- Agency: Harness, Dickey & Pierce, PLC
- Priority: JP2010-122420 20100528
- Main IPC: H02P6/12
- IPC: H02P6/12 ; B62D5/04
Abstract:
A motor drive apparatus includes a control circuit, which determines that a wire connecting a battery to a first power supply relay and a second power supply relay is broken, and not failure of the power supply relays, if power is not supplied to a motor from the power supply relays when the power supply relays are controlled to turn on. The location of failure can thus be specified accurately. It is only necessary in this case to replace the wire. The motor drive apparatus need not be disassembled or investigated in detail. Man-power for specifying the failure location can be reduced.
Public/Granted literature
- US20110290580A1 Motor drive apparatus and electric power steering system using the same Public/Granted day:2011-12-01
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