Title :
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
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;
Conference_Titel :
Mechatronics (ICM), 2015 IEEE International Conference on
Conference_Location :
Nagoya
DOI :
10.1109/ICMECH.2015.7084055
