CPC G01R 33/0082 (2013.01) [G01D 5/145 (2013.01); H02K 11/215 (2016.01); H02K 41/0354 (2013.01); H04M 1/026 (2013.01); H04M 2250/12 (2013.01)] | 29 Claims |
1. A system, comprising:
a voice coil motor (VCM) comprising a magnet-coil arrangement for providing a relative movement therebetween to obtain a relative position;
a Hall sensor located within the coil for sensing the relative movement;
a temperature sensor located in proximity of the Hall sensor for providing temperature sensing; and
a controller having two or more channels coupled to the VCM, to the Hall sensor and to the temperature sensor and configured to control the relative movement between the magnet and the coil of the VCM and to provide, based on the temperature sensing, a temperature correction input to the Hall sensor for compensating a temperature effect on the Hall sensor sensing of the relative movement.
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