NDLI: Modeling and composite nonlinear feedback control of voice coil motor in high precision positioning system

Content Provider	IEEE Xplore Digital Library
Author	Chen, Qiming Li, Liyi Pei, Le Du, Pengcheng
Copyright Year	2014
Description	Author affiliation: Dept. of Electrical Engineering, Harbin Institute of Technology, China (Chen, Qiming; Li, Liyi; Pei, Le; Du, Pengcheng)
Abstract	In this paper, a composite nonlinear feedback (CNF) control method is adopted for servo positioning table which is driven by voice coil motor (VCM), it consists of a linear feedback part for achieving fast response and a nonlinear feedback part for suppressing the overshoot. Meanwhile, the disturbance observer (DOB) is designed to compensate the original CNF control so as to eliminate the time-varying disturbance and improve the positioning accurate. In addition, to make the DOB be able to observe the disturbances accurately, the mathematical model of VCM is established accurately, which takes the air damping, eddy current damping and elastic stiffness into consideration. The experimental and simulation results show that the parameters of VCM are identified precisely, and the improved CNF control method can improve transient performance, steady-state accuracy, it has more robustness to suppress the external disturbance and uncertainty in servo positioning system.
Starting Page	2242
Ending Page	2247
File Size	485126
Page Count	6
File Format	PDF
ISBN	9781479951628
DOI	10.1109/ICEMS.2014.7013857
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-10-22
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Damping Mathematical model Voltage control Robustness Servomotors Coils Closed loop systems
Content Type	Text
Resource Type	Article

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