Title :
Two degree-of-freedom dual-stage actuator controller design for hard disk drives
Author :
Chung, Chung Choo ; Seo, Chin Won ; Lee, Seung-Hi
Author_Institution :
Dept. of Electr. & Comput. Eng., Hanyang Univ., Seoul, South Korea
fDate :
9/1/2000 12:00:00 AM
Abstract :
This paper presents a new controller design method for dual-stage actuators. The controller consists of two stabilizing controllers for VCM and MEMS actuators and two main controllers (slave and master). The slave and master controllers are used to shape the sensitivity of the closed loop system at low and high frequency, respectively. With the proposed method satisfactory sensitivity and complementary sensitivity are achieved
Keywords :
MIMO systems; closed loop systems; control system synthesis; disc drives; frequency response; hard discs; microactuators; sensitivity analysis; servomechanisms; 2-DOF dual-stage actuator; MEMS actuators; MIMO system; VCM actuators; closed loop system; controller design method; frequency response; hard disk drives; high frequency; low frequency; master controller; second order system; sensitivity shaping; servomechanism; slave controller; stabilizing controllers; Actuators; Closed loop systems; Control systems; Design methodology; Error correction; Frequency; Hard disks; Master-slave; Microactuators; Micromechanical devices;
Journal_Title :
Magnetics, IEEE Transactions on
