Methods and apparatuses for measuring VCM BEMF at a VCM...

Details Methods and apparatuses for measuring VCM BEMF at a VCM... Methods and apparatuses for measuring VCM BEMF at a VCM...

2007-05-18

2010-06-01

Ro, Bentsu (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

Brushless motor closed-loop control

C318S400300, C318S459000, C318S442000

Reexamination Certificate

active

07728539

ABSTRACT:
Devices and methods for performing dynamic sampling of a back electromotive force (BEMF) measurement are provided. A device has hardware, including a voice coil motor (VCM) for receiving a VCM command signal and a correction circuit, for obtaining the VCM command signal and a coil voltage measurement from the hardware, where the correction circuit removes a transient voltage measurement due to a change in the VCM command signal from the coil voltage measurement and outputs an estimated BEMF measurement.

REFERENCES:
patent: 6034496 (2000-03-01), Male
patent: 6542324 (2003-04-01), Galbiati et al.
patent: 6611118 (2003-08-01), Abe et al.
patent: 6864656 (2005-03-01), Abe et al.
patent: 7215094 (2007-05-01), Maiocchi et al.
patent: 7362538 (2008-04-01), Lee et al.
patent: 2002/0141098 (2002-10-01), Schlager

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