NDLI: External vibration compensation via loop shaping and $H_{∞}$ feedforward control design for hard disk drives in mobile applications

Content Provider	IEEE Xplore Digital Library
Author	Chunling Du Shuzhi Sam Ge Lewis, F.L. Jingliang Zhang
Copyright Year	2007
Description	Author affiliation: A*STAR Data Storage Inst., Singapore (Chunling Du)
Abstract	This paper focuses on compensation for external vibration effect on the positioning accuracy of hard disk drives. A feedforward controller is designed to attenuate the effect with the aid of a sensor to detect external vibrations. Loop shaping in frequency domain and $H_{∞}$ method in state space are used to design the feedforward controller. The application results in a 1.8-inch disk drive with an accelerometer to measure acceleration signal show that 70% and 97% reduction of the position error signal can be achieved with the feedforward control designed by the loop shaping and $H_{∞}$ method respectively. The robustness of the two methods is also evaluated and compared for external vibrations with amplitude variations.
Starting Page	277
Ending Page	282
File Size	1122903
Page Count	6
File Format	PDF
ISBN	9781424404407
ISSN	21589860
DOI	10.1109/ISIC.2007.4450898
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-10-01
Publisher Place	Singapore
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Shape control Accelerometers Hard disks Vibration control Frequency domain analysis State-space methods Disk drives Position measurement Acceleration Error correction $H_{∞}$ control acceleration feedforward control external vibration compensation hard disk drives mobile application servo control
Content Type	Text
Resource Type	Article

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