Robust control of an active tilting actuator for high-density optical disk

Author

Kang, Ji-Yoon ; Yoon, Myung-Gon

Author_Institution

Electro Mech. Lab., Samsung Adv. Inst. of Technol., Suwon, South Korea

Volume

2

fYear

1998

fDate

21-26 Jun 1998

Firstpage

861

Abstract

We design a new actuator for optical disk pick-up device in order to control the tilting motion. The newly designed actuator makes it possible to control the tilting motion actively, while the conventional actuator prevent tilting with passive spring. We present the 3-DOF dynamic model of the wire spring type actuator and suggest a design method of voice coil motor. To consider the assembling error, such as the difference of mass center and force center, we designed a robust H _∞ controller. The simulation results show the designed actuator with MIMO H_∞ controller enhances the rejection of tilting motion compared with conventional actuator with SISO lead-lag compensator

Keywords

H^∞ control; MIMO systems; actuators; control system synthesis; motion control; optical disc storage; robust control; tracking; 3-DOF dynamic model; H_∞ control; MIMO systems; active tilting actuator; optical disk drive; robust control; tilting motion control; voice coil motor; wire spring type actuator; Actuators; Coils; Design methodology; Motion control; Optical control; Optical design; Optical devices; Robust control; Springs; Wire;

fLanguage

English

Publisher

ieee

Conference_Titel

American Control Conference, 1998. Proceedings of the 1998

Conference_Location

Philadelphia, PA

ISSN

0743-1619

Print_ISBN

0-7803-4530-4

Type

conf

DOI

10.1109/ACC.1998.703530

Filename

703530