DocumentCode :
2261047
Title :
A novel design of short-seeking control for hard disk drives
Author :
Yang, Li ; Tomizuka, Masayoshi
Author_Institution :
Dept. of Mech. Eng., California Univ., Berkeley, CA
fYear :
2006
fDate :
14-16 June 2006
Abstract :
This paper discusses short seeking control for a hard disk drive with voice coil motor (VCM). A novel design method is proposed based on the track following control and initial value adjustment (IVA). Initial value adjustment, which adjusts the initial values of the track-following controllers for short seeking, makes the use of the feedforward controller and reference trajectory unnecessary. The proposed design also takes into consideration the compromise between speed and overshoot in short seeking when seeking distance becomes longer by using a two-stage IVA scheme: (1) In the first stage (when the read/write head is far away from the target track), the integral action of the track following controller is inactivated and IVA is designed to yield a high-speed seeking; (2) In the second stage (when the head approaches the target track), the integral action is switched on, and IVA is designed to produce a fast and smooth response without overshoot. A design example verifies the effectiveness of the proposed method
Keywords :
control system synthesis; disc drives; feedback; feedforward; hard discs; feedforward controller; hard disk drives; initial value adjustment; integral action; read-write head; short-seeking control design; track following control; voice coil motor; Closed loop systems; Control systems; Error correction; Frequency; Hard disks; Magnetic heads; Magnetic resonance; Optimal control; Stability; Steady-state;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
American Control Conference, 2006
Conference_Location :
Minneapolis, MN
Print_ISBN :
1-4244-0209-3
Electronic_ISBN :
1-4244-0209-3
Type :
conf
DOI :
10.1109/ACC.2006.1655420
Filename :
1655420
Link To Document :
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