Experimental Characterization of High-Performance Miniature Auto-Focusing VCM Actuator

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Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/50229

Title:	Experimental Characterization of High-Performance Miniature Auto-Focusing VCM Actuator
Authors:	Liu,CS;Ko,SS;Lin,PD
Contributors:	機械工程學系
Keywords:	ZERO HOLDING CURRENT;LIQUID-CRYSTAL LENS;CAMERA APPLICATIONS;GENETIC ALGORITHM;OPTIMAL-DESIGN;MOBILE PHONES;VIDEO CAMERA;MOTOR;MECHANISM
Date:	2011
Issue Date:	2012-03-27 17:07:05 (UTC+8)
Publisher:	國立中央大學
Abstract:	When designing an auto-focusing actuator for use in cell phone cameras, it is important to maximize the positioning repeatability while simultaneously minimizing the device size, the power consumption, the response time, and the dynamic tilt angle. In a previous study (Liu and Lin, Opt. Express, vol. 17, pp. 9754-9763, 2009), the current group designed a miniature auto-focusing voice coil motor (VCM) actuator in which the lens was held in position using a magnetoconductive plate and a closed-loop control mechanism. The aim of this study is to characterize the performance of this device using an experimental approach. The results show that the proposed actuator has a high positioning repeatability, a low dynamic tilt angle, a rapid response, and a low power consumption.
Relation:	IEEE TRANSACTIONS ON MAGNETICS
Appears in Collections:	[Departmant of Mechanical Engineering ] journal & Dissertation

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