Abstract
Fault-tolerant control (FTC) of a non-affine system with uncertainties is one of critical issues in nonlinear control. In this paper, in the presence of unknown actuator failures, an event-trigger-based FTC scheme is proposed for such a nonlinear system with predefined performance. For actuator failures, a compensation mechanism is designed to alleviate their impacts. By utilizing a predefined performance function, higher tracking accuracy can be obtained. Meanwhile, an event-triggered mechanism with a time-varying threshold, depending on tracking error, reduces the number of communications for a controller-to-actuator channel. An adaptive event-triggered function is then proposed with the compensation mechanism to improve the self-adjusting ability of the triggered function. Also, extended state observers and tracking differentiators are utilized to reconstruct unknown dynamics of the system and to simplify high-order derivation of virtual control laws, respectively. The stability of the closed-loop system is analyzed by input-to-state practically stability. Finally, two simulation results are supplied to verify the effectiveness of the proposed control method.
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This work was supported in part by National Natural Science Foundation of China under Grant 61873130, in part by Natural Science Foundation of Jiangsu Province under Grant BK20191377, in part by Key projects of Natural Science Foundation of Hebei Province under Grant E2020203139, in part by the 1311 Talent Project of Nanjing University of Posts and Telecommunications, in part by Natural Science Foundation of Nanjing University of Posts and Telecommunications under Grant NY220194, NY221082 and NY222144, and in part by the foundation from Key Laboratory of Industrial Internet of Things and Networked Control of the Ministry of Education of China under Grant 2021FF01.
Yang Yang received his B.E., M.E., and Ph.D. degrees in automatic control from Dalian Maritime University, Dalian, China, in 2008, 2010, and 2013, respectively. From 2018 to 2019, he held a visiting research fellow position at the School of Electrical Engineering and Computer Science, Queensland University of Technology, Brisbane QLD, Australia. He is currently an Associate Professor with the College of Automation & College of Artificial Intelligence, Nanjing University of Posts and Telecommunications (NJUPT), Nanjing, China. His research interests include nonlinear control theory and intelligent control. Dr. Yang was a recipient of the National Scholarship for Ph.D. candidates, the HOSCO Special Award, the Jiangsu Government Scholarship for Overseas Studies, the IET CSR Best Paper Award of 2019 Chinese Automation Congress, the Excellent Postdoctoral Research Fellow Award of NJUPT, and the 1311 Talent Project at NJUPT. He serves as a reviewer for various peer-reviewed journals.
Yuwei Zhang is currently pursuing her master’s degree in control theory and control engineering at Nanjing University of Posts and Telecommunications, Nanjing, China. Her current research interests include nonlinear control theory.
Zijin Wang is currently pursuing a master’s degree in control theory and control engineering at Nanjing University of Posts and Telecommunications, Nanjing, China. His current research interests include nonlinear control theory.
Jinran Wu is pursuing a Ph.D. degree in statistics at the School of Mathematical Sciences and the ARC Centre of Excellence for Mathematical & Statistical Frontiers, Queensland University of Technology, Brisbane QLD, Australia. He was awarded his bachelor’s degree from Anhui University, China in 2014, and his master’s degree from Lanzhou University, China in 2017. He is interested in the robust statistical learning and engineering optimisations. He was awarded the Australian Government Research Training Program (RTP) Stipend (International), 2018.
Xuefeng Si is currently pursuing a master’s degree in control theory and control engineering at Nanjing University of Posts and Telecommunications, Nanjing, China. His current research interests include smart grid control.
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Yang, Y., Zhang, Y., Wang, Z. et al. Event-trigger-based Fault-tolerant Control of Uncertain Non-affine Systems with Predefined Performance. Int. J. Control Autom. Syst. 21, 519–535 (2023). https://doi.org/10.1007/s12555-021-1007-y
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DOI: https://doi.org/10.1007/s12555-021-1007-y