Digital tracking controller design for CD player using disturbance observer

Author

Fujiyama, Koji ; Tomizuka, Masayoshi ; Katayama, Ryu

Author_Institution

Hypermedia Res. Center, Sanyo Electr. Co. Ltd., Osaka, Japan

fYear

1998

fDate

29 Jun-1 Jul 1998

Firstpage

598

Lastpage

603

Abstract

Disturbance rejection is becoming more and more important as optical disk players are being utilized in more applications. The paper considers the design of a tracking servo controller for a CD player using the disturbance observer (DOB) theory. By adding a DOB to the conventional PID controller, the tracking performance is dramatically improved in the presence of sinusoidal vibrations or a shock disturbance. The effectiveness of the DOB is verified by experimentation using an actual CD player as well as by computer simulations

Keywords

Hi-Fi equipment; digital control; digital simulation; observers; position control; servomechanisms; three-term control; CD player; conventional PID controller; digital tracking controller; disturbance observer; disturbance rejection; optical disk players; shock disturbance; sinusoidal vibrations; tracking performance; tracking servo controller; Actuators; CD-ROMs; DVD; Digital control; Insulation life; Mechanical engineering; Optical control; Optical recording; Optical sensors; Servomechanisms;

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Motion Control, 1998. AMC '98-Coimbra., 1998 5th International Workshop on

Conference_Location

Coimbra

Print_ISBN

0-7803-4484-7

Type

conf

DOI

10.1109/AMC.1998.743604

Filename

743604