標題: Low power consumption focusing actuator for a mini video camera
作者: Yu, HC
Lee, TY
Lin, SK
Kuo, LT
Wang, SJ
Ju, JJ
Huang, DR
電控工程研究所
Institute of Electrical and Control Engineering
公開日期: 15-Apr-2006
摘要: A novel low power consumption autofocusing actuator in a mini video camera is constructed in accordance with the result of a systematic design procedure of voice coil motors (VCM). This paper emphasizes the position control of such a VCM. The position feedback signals are provided by a magnetoresistive (MR) encoder. The position estimation algorithm (PEA) is developed to precisely decode the MR signals for the position of the moving part of the VCM. Different postures change the loading of the moving part of the VCM, so that an adaptive model-following control system based on the PEA is proposed to compensate for the loading variation. The experiments verify the fast dynamic performance and high power efficiency of the VCM. (C) 2006 American Institute of Physics.
URI: http://dx.doi.org/10.1063/1.2158927
http://hdl.handle.net/11536/12371
ISSN: 0021-8979
DOI: 10.1063/1.2158927
期刊: JOURNAL OF APPLIED PHYSICS
Volume: 99
Issue: 8
結束頁: 
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