DocumentCode :
83400
Title :
Aliased Narrow-Band Disturbance Rejection Using Phase-Stabilization Above Nyquist Frequency
Author :
Tan, Yan Zhi ; Pang, Chee Khiang ; Hong, Feng ; Lee, Tong H.
Author_Institution :
Volume :
49
Issue :
6
fYear :
2013
fDate :
Jun-13
Firstpage :
2693
Lastpage :
2696
Abstract :
Lightly damped resonant modes at above the Nyquist frequency which are not phase-stabilized result in aliased narrow-band disturbances. In this paper, an elliptical transformation-based scheme is proposed for phase-stabilization of resonant modes at above the Nyquist frequency. Our experimental results on the Pb-Zr-Ti active suspension in a commercial 3.5 
dual-stage hard disk drive show that narrow-band disturbances are suppressed without large spillover effects at an aliased resonant mode at 4.23 kHz, which is in close proximity with an out-of-phase resonant mode at 3.50 kHz.
Keywords :
Above Nyquist frequency; aliasing; disturbance rejection; elliptical transform; out-of-phase; phase-stabilization;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2013.2252460
Filename :
6522277
Link To Document :
