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Multi-Mode Sliding Mode Control for Precision Linear Stage Based on Fixed or Floating Stator

Authors Fang, Jiwen
Long, Zhili
Wang, Michael Yu View this author's profile
Zhang, Lufan
Dai, Xufei
Issue Date 2016
Source Review of Scientific Instruments , v. 87, (2), February 2016, article number 025115
Summary This paper presents the control performance of a linear motion stage driven by Voice Coil Motor (VCM). Unlike the conventional VCM, the stator of this VCM is regulated, which means it can be adjusted as a floating-stator or fixed-stator. A Multi-Mode Sliding Mode Control (MMSMC), including a conventional Sliding Mode Control (SMC) and an Integral Sliding Mode Control (ISMC), is designed to control the linear motion stage. The control is switched between SMC and IMSC based on the error threshold. To eliminate the chattering, a smooth function is adopted instead of a signum function. The experimental results with the floating stator show that the positioning accuracy and tracking performance of the linear motion stage are improved with the MMSMC approach. © 2016 AIP Publishing LLC.
ISSN 0034-6748
Language English
Format Article
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