Abstract
This paper develops an extended-state-observer-based sliding mode control strategy for continuous casting mold oscillatory system driven by servo motor in the presence of matched and mismatched disturbance. Extended state observers are employed to estimate the compound disturbances, and the requirement of the derivative of the compound disturbances to zero is avoided. In order to counteract the mismatched disturbance and attenuate the chattering phenomenon, a novel sliding surface based on extended state observer is designed for the system. Simulation results illustrate that the proposed controller can achieve better tracking performance and robustness to the compound disturbance.
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Recommended by Associate Editor M. Chadli under the direction of Editor PooGyeon Park. This work was supported in part by the united fund of the National Natural Science Foundation and Bao Steel Group Co., LTD(U1260203), the National Natural Science Foundation of China under grant 61403332, the higher education innovation team of Hebei Province Leading Talent Cultivation Project under grant LJRC013, the project supported by Natural Science Foundation of Hebei Province under grant F2015203400 and doctoral foundation of Yanshan University under grant B925.
Sheng-Li Shi received the B.S. degree in Mathematics from Shandong University in 2002, and the Ph.D. degree in control science and engineering from Yanshan University in 2014. He is currently a lecturer with the School of Science, Yanshan University. His research interests include robust control and disturbance compensation.
Ke-Song Kang received the B.S. degree in control science and engineering from Yanshan University in 2016. His research interests include robust adaptive control theory.
Jian-Xiong Li received the B.S. degree and Ph.D. in control science and engineering from Yanshan University in 2004 and 2012. He is currently an associate professor with the School of Electrical Engineering, Yanshan University. His research interests include robust adaptive control theory with applications to electro-hydraulic servo motor system.
Yi-Ming Fang received the B.S. and Ph.D. degrees in control science and engineering from Yanshan University in 1985 and 2003. He is currently a professor with the School of Electrical Engineering, Yanshan University. His research interests include automation technology and application of continuous casting and steel rolling, modeling and controlling of complex system, adaptive robust control theory and application.
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Shi, SL., Kang, KS., Li, JX. et al. Sliding mode control for continuous casting mold oscillatory system driven by servo motor. Int. J. Control Autom. Syst. 15, 1669–1674 (2017). https://doi.org/10.1007/s12555-016-0333-y
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DOI: https://doi.org/10.1007/s12555-016-0333-y