標題: A design of mini actuator for compact camera without using permanent magnet
作者: Tsai, Ching-Lung
Liaw, Der-Cherng
電控工程研究所
Institute of Electrical and Control Engineering
關鍵字: mini actuator;no permanent magnet;magnetic force;auto-focus
公開日期: 1-Jan-2014
摘要: This paper presents a design of mini actuator without using permanent magnet for auto-focus (AF) compact camera module (CCM) built on mobile phone, tablet PC and notebook. The current through the coils of electromagnets will yield magnetic force to move the moving part up and down. Comparing with conventional spring-type voice coil motor (VCM) and non-spring type VCM, the proposed actuator eliminates the concerns of rare earth supply and magnetic flux leakage which can fail the function of magnetic flux sensitive device such as e-compass. The proposed actuator also simplifies the power converter design from bipolar scheme as required by conventional non-spring type VCM to unipolar. A comprehensive electromagnetic analysis is performed by using finite element method to characterize the performance of the proposed actuator. Numerical simulations demonstrate that the magnetic flux leakage in the proposed actuator is much smaller than those by conventional design.
URI: http://dx.doi.org/10.4028/www.scientific.net/AMM.607.483
http://hdl.handle.net/11536/125011
ISBN: 978-3-03835-180-1
ISSN: 1660-9336
DOI: 10.4028/www.scientific.net/AMM.607.483
期刊: MACHINE DESIGN AND MANUFACTURING ENGINEERING III
起始頁: 483
結束頁: 489
Appears in Collections:Conferences Paper