Invention Grant
US09121753B2 Control techniques for motor driven systems utilizing back-EMF measurement techniques
有权
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.: US13760622Application Date: 2013-02-06
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Publication No.: US09121753B2Publication Date: 2015-09-01
- Inventor: Alan Patrick Cahill , Gary Casey , John A. Cleary , Eoin Edward English , Christian Jimenez , Javier Calpe Maravilla , Colin G. Lyden , Thomas F. Roche
- Applicant: Alan Patrick Cahill , Gary Casey , John A. Cleary , Eoin Edward English , Christian Jimenez , Javier Calpe Maravilla , Colin G. Lyden , Thomas F. Roche
- Applicant Address: BM Hamilton
- Assignee: ANALOG DEVICES GLOBAL
- Current Assignee: ANALOG DEVICES GLOBAL
- Current Assignee Address: BM Hamilton
- Agency: Kenyon & Kenyon LLP
- Main IPC: H02K41/00
- IPC: H02K41/00 ; G01H13/00 ; H02P25/02
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 is 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.
Public/Granted literature
- US20140217945A1 CONTROL TECHNIQUES FOR MOTOR DRIVEN SYSTEMS UTILIZING BACK-EMF MEASUREMENT TECHNIQUES Public/Granted day:2014-08-07
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