Invention Grant
- Patent Title: Back-EMF detection for motor control
- Patent Title (中): 用于电机控制的反电动势检测
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Application No.: US13223705Application Date: 2011-09-01
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Publication No.: US08853985B2Publication Date: 2014-10-07
- Inventor: Ravishanker Krishnamoorthy , Foo Leng Leong , Edy Susanto
- Applicant: Ravishanker Krishnamoorthy , Foo Leng Leong , Edy Susanto
- Applicant Address: BB
- Assignee: Marvell World Trade Ltd.
- Current Assignee: Marvell World Trade Ltd.
- Current Assignee Address: BB
- Main IPC: H02P1/00
- IPC: H02P1/00 ; H02P6/18

Abstract:
Systems, methods, and other embodiments associated with back-EMF detection for motor control are described. In an embodiment, an apparatus includes a drive circuit configured to apply excitation signals to respective inputs of a motor, a signal inhibit circuit configured to convey a signal to inhibit application of the excitation signals during an interval, and a measuring circuit configured to measure a back-electromotive force (EMF) signal crossing a reference signal during the interval.
Public/Granted literature
- US20120068649A1 BACK-EMF DETECTION FOR MOTOR CONTROL Public/Granted day:2012-03-22
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