Multirate adaptive feedforward FIR filter for suppressing disturbances to the Nyquist frequency and beyond

Author

Weili Yan ; Chunling Du ; Chee Khiang Pang

Author_Institution

Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore, Singapore

fYear

2015

fDate

6-8 March 2015

Firstpage

660

Lastpage

664

Abstract

In this paper, an add-on multirate adaptive feedforward finite impulse response (FIR) filter is incorporated into the existing slow single-rate track-following control in the hard disk drive (HDD) servo mechanism to suppress the disturbance to the Nyquist frequency and beyond. A multirate least mean square (LMS) algorithm is applied to adjust the parameters in the multirate FIR filter to cancel the effects caused by the disturbance. Our simulation results on the model of the voice coil motor (VCM) in a hard disk drive (HDD) demonstrate that the proposed scheme is able to suppress the disturbances to the Nyquist frequency and beyond.

Keywords

FIR filters; adaptive filters; disc drives; feedforward; hard discs; least mean squares methods; servomechanisms; HDD; LMS algorithm; Nyquist frequency; VCM; add-on multirate adaptive feedforward FIR filter; finite impulse response filter; hard disk drive; multirate least mean square algorithm; servomechanism; slow single-rate track-following control; voice coil motor; Actuators; Adaptation models; Feedforward neural networks; Finite impulse response filters; Hard disks; Resonant frequency; Servomotors;

fLanguage

English

Publisher

ieee

Conference_Titel

Mechatronics (ICM), 2015 IEEE International Conference on

Conference_Location

Nagoya

Type

conf

DOI

10.1109/ICMECH.2015.7084055

Filename

7084055