A Concept of a Magnetically-Actuated Optical Image Stabilizer for Mobile Applications

被引：16
|
作者：
Pournazari, Parham [1 ]
Nagamune, Ryozo [2 ]
Chiao, Mu [2 ]
机构：
[1] Univ Texas Austin, Dept Mech Engn, Austin, TX 78712 USA
[2] Univ British Columbia, Dept Mech Engn, Vancouver, BC V6T 1Z4, Canada
来源：
IEEE TRANSACTIONS ON CONSUMER ELECTRONICS | 2014年 / 60卷 / 01期
基金：
加拿大自然科学与工程研究理事会;
关键词：
Image stabilization; microlens; magnetic actuators; microelectromechanical systems; feedback control; DESIGN; INTEGRATION; MECHANISM; SYSTEM;
D O I：
10.1109/TCE.2014.6780919
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper presents a concept of optical image stabilization for miniature digital cameras using magnetic actuators. The proposed device has a 3 degrees-of-freedom flexible lens platform, which is actuated by four magnetic actuators. The device uses position feedback control to counter-rotate the lens to compensate for vibration disturbance introduced by the user's hand-shake. A dynamic model of the device is developed for the feedback controller design purpose. Controller design and simulations based on actual hand-shake data collected from the gyro sensors of a mobile device are presented. Experimental results of a single degree-of-freedom large-scale prototype demonstrate vibration compensation up to 45 Hz(1).
引用
收藏
页码：10 / 17
页数：8
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