Optimization of initial value compensation for settle control in hard disk drives

Author

Li, Y. ; Sun, Y. ; Smith, C. ; Guo, L. ; Guo, W.

Author_Institution

Adv. Technol. Group, Maxtor Corp., Milpitas, CA

fYear

2004

fDate

16-19 Aug. 2004

Firstpage

42

Lastpage

43

Abstract

A method is proposed for optimal settle control using 1-degree-of-freedom (1-DOF) control and initial value compensation (IVC) in hard disk drives. A feedforward control signal is injected into the control system during settle control to compensate the initial conditions when switching from seek to settle control. A transfer matrix from initial conditions to feedforward control input is calculated by least square optimization to minimize a cost function defined by position error, control effort and jerk. Simulation and experimental results are presented

Keywords

compensation; control system synthesis; disc drives; feedforward; hard discs; matrix algebra; optimal control; optimisation; position control; 1-DOF control; 1-degree-of-freedom; feedforward control; hard disk drives; initial value compensation; least square optimization; mode switching control; optimization; seek control; settle control; transfer matrix; Control systems; Cost function; Design methodology; Design optimization; Error correction; Hard disks; Least squares methods; Optimal control; Servosystems; Velocity control;

fLanguage

English

Publisher

ieee

Conference_Titel

Asia-Pacific Magnetic Recording Conference, 2004. APMRC 2004

Conference_Location

Seoul

Print_ISBN

0-7803-8717-1

Type

conf

DOI

10.1109/APMRC.2004.1521941

Filename

1521941