Control of a micro-actuator for hard disk drives using self-sensing actuator

被引:2
|
作者
Yamada, Hiroyuki
Sasaki, Minoru
Nam, Yoonsu
机构
[1] Gifu Univ, Grad Sch Engn, Gifu 5011193, Japan
[2] Gifu Univ, Dept Human & Informat Syst Engn, Gifu 5011193, Japan
[3] Kangweon Natl Univ, Dept Mech Engn, Chunchon 200701, Kangwon Do, South Korea
关键词
micro-actuator; self-sensing actuator; two-degree-of-freedom control; Lyapunov's direct method;
D O I
10.3233/JAE-2006-807
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 describes vibration control and position control of a micro-actuator for hard disk drives using self-sensing actuator. A stabilizing feedback control low is designed by using Lyapunov's direct method. The feedback control law depends only on the time derivative of tip slope in the micro-actuator. The self-sensing actuation using the electrical RC bridge circuit can measure strain rate in the micro-actuator. This sensing signals correspond to the time rate of tip slope in the micro-actuator. The feedback controller derived from Lyapunov's direct method can realize by using the self-sensing signal. A two-degree-of-freedom control system consists of a feedforward and the feedback controller. The feedforward controller is designed by using inverse dynamic system, while the stabilized feedback controller is designed by Lyapunov's direct method. Numerical simulation and experimental results confirm the feasibility of the proposed control system.
引用
收藏
页码:247 / 259
页数:13
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