NDLI: Design, modeling, and seek control of a voice-coil motor actuator with nonlinear magnetic bias

Content Provider	IEEE Xplore Digital Library
Author	Ratliff, R.T. Pagilla, P.R.
Copyright Year	1965
Abstract	The research investigates the feasibility and trajectory tracking performance of an adaptive controller applied to a voice-coil motor actuator (VCMA) influenced by nonlinear magnetic bias. A magnetic bias feature on the actuator arm is designed to compensate for nonoperational shock. Because the resulting bias is nonlinear and uncertain, a model-based adaptive controller was developed to meet the seek performance requirements and simultaneously handle effects of the nonlinear bias. A VCMA with the bias feature was manufactured according to the design requirements. Extensive experiments were conducted to characterize the VCMA physical parameters and verify the controller performance. The effects of sample rate and bias modeling accuracy are also discussed. A representative sample of the results is presented.
Sponsorship	IEEE Magnetics Society
Starting Page	2180
Ending Page	2188
Page Count	9
File Size	2218207
File Format	PDF
ISSN	00189464
Volume Number	41
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Actuators Nonlinear magnetics Electric shock Latches Programmable control Adaptive control Disk drives Magnetic heads Vibrations Magnetic separation seek control bias disk drive projection
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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