Compensation of Dominant Frequency Component of Non-Repeatable Runout in Hard Disk Drives

Author

Zheng, Q. ; Tomizuka, M.

Author_Institution

Dept. of Mech. Eng., California Univ., Berkeley, CA

fYear

2006

fDate

Nov. 29 2006-Dec. 1 2006

Firstpage

1

Lastpage

2

Abstract

This paper presents an approach to compensating for the dominant frequency component of non-repeatable runout (NRRO). Frequency of the dominant component is estimated by the least mean square (LMS) algorithm within a short time window. Based on the frequency estimate, the basis function algorithm is applied to adaptively identify the magnitude and phase of the dominant component. The performance of this compensation scheme is demonstrated by simulation on a realistic hard disk drive model.

Keywords

compensation; disc drives; frequency estimation; hard discs; least mean squares methods; LMS algorithm; NRRO; compensation; frequency estimation; hard disk drives; least mean square; nonrepeatable runout; short time window; Band pass filters; Delay estimation; Frequency estimation; Hard disks; Least squares approximation; Manufacturing processes; Mechanical engineering; Phase estimation; Rail to rail outputs; Signal processing; Basis function algorithm; frequency identification; non-repeatable runout; time-varying sinusoidal signal;

fLanguage

English

Publisher

ieee

Conference_Titel

Asia-Pacific Magnetic Recording Conference, 2006

Conference_Location

Singapore

Print_ISBN

1-4244-0863-6

Type

conf

DOI

10.1109/APMRC.2006.365891

Filename

4215276