Invention Application
WO2014122517A2 CONTROL TECHNIQUES FOR MOTOR DRIVEN SYSTEMS UTILIZING BACK-EMF MEASUREMENT TECHNIQUES
审中-公开
利用反电动势测量技术的电机驱动系统的控制技术
- Patent Title: CONTROL TECHNIQUES FOR MOTOR DRIVEN SYSTEMS UTILIZING BACK-EMF MEASUREMENT TECHNIQUES
- Patent Title (中): 利用反电动势测量技术的电机驱动系统的控制技术
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Application No.: PCT/IB2014/000104Application Date: 2014-02-04
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Publication No.: WO2014122517A2Publication Date: 2014-08-14
- Inventor: CAHILL, Alan, Patrick , CASEY, Gary , CLEARY, John, A. , ENGLISH, Eoin, E. , JIMENEZ, Christian , CALPE MARAVILLA, Javier , LYDEN, Colin, G. , ROCHE, Thomas, F.
- Applicant: ANALOG DEVICES TECHNOLOGY
- Applicant Address: 3rd Floor, Par La Ville Place 14 Par La Ville Road Hamilton BM
- Assignee: ANALOG DEVICES TECHNOLOGY
- Current Assignee: ANALOG DEVICES TECHNOLOGY
- Current Assignee Address: 3rd Floor, Par La Ville Place 14 Par La Ville Road Hamilton BM
- Priority: US13/760,622 20130206
Abstract:
A method and apparatus for automatic resonance detection is disclosed for a motor- driven mechanical system such as a voice coil motor (VCM) in which a resonance detector and driver are provided. The automatic resonance detector may be implemented on the same integrated circuit as the driver, and dynamically determines the natural resonant frequency of the VCM driven by the driver. The resonant frequency is determined by measuring the back electromotive force (BEMF) of the VCM, detecting the slope of the BEMF signal, and determining the resonant frequency from the slope of the BEMF signal.
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