Output feedback sliding mode control for a linear focusing actuator in digital video cameras

被引：6
|
作者：
Yu, Hsing-Cheng [1 ]
Liu, T. S.
机构：
[1] Natl Chiao Tung Univ, Dept Mech Engn, Hsinchu 30010, Taiwan
[2] Ind Technol Res Inst, Elect & Optoelect Res Labs, Hsinchu 31040, Taiwan
来源：
IEEE TRANSACTIONS ON MAGNETICS | 2007年 / 43卷 / 11期
关键词：
digital video camera (DVC); focusing; linear actuator; sliding mode control (SMC.);
D O I：
10.1109/TMAG.2007.893299
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：
The output feedback sliding mode control offers an effective positioning method by robustness to parameter variation and disturbance rejection. This paper presents the output feedback sliding mode control based on a position estimation algorithm written in the microprocessor for use in the focusing control system of a digital video camera to achieve fast focusing response and accurate positioning despite vibration and friction of the movable part of the linear focusing actuator. The focusing performance by utilizing the output feed- back sliding mode control includes a 60-ms setting time and 7-mu m steady-state error, respectively, which are only half and one-third of those in proportional-integral-derivative control when the movable part of the linear focusing actuator moves at a 5-mm stroke.
引用
收藏
页码：4048 / 4050
页数：3
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