Abstract
In this paper, a novel load disturbance observer-based global complementary sliding mode control (NLDOB-GCSMC) method is proposed to achieve high servo performance of the precision motion stage driven by a permanent magnet linear synchronous motor (PMLSM). The global complementary sliding mode control (GCSMC) method incorporates an approach angle into the saturation function to realize the dynamic change of the boundary layer, which guarantees the asymptotic stability and improves the global robustness of the system. Besides, compared to hybrid CSMC strategies, the GCSMC method has a simpler structure and faster response speed. However, in practical applications, the load disturbance has a significant impact on system performance. Therefore, a novel load disturbance observer (NLDOB) capable of identifying the load variation is proposed. According to the model reference adaptive identification (MRAI) theory, NLDOB can identify the load disturbance on-line and realize compensation to further improve the robustness. The more accurate tracking performance and stronger robustness of the proposed control scheme compared to conventional approaches have been confirmed through comparative experimental studies.
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Recommended by Associate Editor Ning Sun under the direction of Editor Yoshito Ohta.
This work was supported by National Natural Science Foundation of China under Grant 51175349 and Key Projects of Liaoning Provincial Natural Science Foundation Plans under Grant 20170540677.
Hongyan Jin was born in Shenyang, Liaoning, China, in 1993. She received her B.S. degree in electrical engineering from Shenyang University of Technology, Shenyang, China, in 2016. She is currently working toward a Ph.D. degree in electrical engineering in Shenyang University of Technology. Her research interests include motor control and intelligent control.
Ximei Zhao was born in Changchun, Jilin, China, in 1979. She received her B.S., M.S. and Ph.D. degrees in electrical engineering from Shenyang University of Technology, Shenyang, China, in 2003, 2006, and 2009, respectively. She is currently a professor and a doctoral supervisor with the School of Electrical Engineering in Shenyang University of Technology. Her research interests are electrical machines, motor drives, motor control, intelligent control and robot control. She has authored or coauthored more than 100 technical papers, 3 textbooks and holds 15 patents in these areas.
Tianhe Wang was born in Shenyang, Liaoning, China, in 1993. He received his B.S. degree in automation from Dalian Jiaotong University, Dalian, China, in 2016. He is currently working toward an M.S. degree in electrical engineering in Shenyang University of Technology. His research interests include motor control and intelligent control.
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Jin, H., Zhao, X. & Wang, T. Novel Load Disturbance Observer-based Global Complementary Sliding Mode Control for a Precision Motion Stage Driven by PMLSM. Int. J. Control Autom. Syst. 19, 3676–3687 (2021). https://doi.org/10.1007/s12555-020-0360-6
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DOI: https://doi.org/10.1007/s12555-020-0360-6