Tracking control of a two-stage servo head arm for a hard disk drive

Issue title: Proceedings of the tenth International Symposium on Applied Electromagnetics and Mechanics ISEM-Tokyo

Article type: Research Article

Authors: Murai, Masanori^{a; *} | Tani, Junji^a | Qiu, Jinhao^a

Affiliations: [a] Institute of Fluid Science, Tohoku University, 2-1-1 Katahira, Aoba-Ku, 980-8577 Sendai, Japan

Correspondence: [*] Corresponding author: Masanori Murai, Tel.: +81 22 217 5251; Fax: +81 22 217 5251; E-mail: murai@ifs.tohoku.ac.jp

Abstract: This paper describes a new type of two stage servo head arm for magnetic disk drives. Four PZT actuators were bonded to the stainless steel head arm. The PZT actuators were used for accurate follow-up of the track and also vibration control of the head arm. The PID control method was used in the design of controllers for vibration control and tracking follow-up control of the arm. The characteristics of a prototype of the servo system were measured and its effectiveness was verified by experiment.

DOI: 10.3233/JAE-2002-311

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 13, no. 1-4, pp. 145-149, 2002