Abstract
In this paper, the event-triggered adaptive control for a class of series elastic actuator systems is considered. To solve this problem, firstly we propose an adaptive control scheme with a novel one-step design framework such that both the controller expression and parameter estimator are much simpler than related existing recursive design approaches. Then a set of event-triggering conditions is designed which is updated for each triggering. The ISS assumption is not needed for control design. It is shown that the proposed control schemes guarantee that all the closed-loop signals are semi-globally bounded and the stabilization error converges to the origin asymptotically. The zeno behavior is avoided. Simulation results illustrate the effectiveness of our scheme.
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This work was partially supported by National Key Research and Development Program of China under grant no.2019YFB1312002, partially by National Natural Science Foundation of China under Grants 61703061, partially by Chongqing Key Laboratory on IFBDA under Grant CSSXKFKTZ201802, partially by the Basic Science and Frontier Technology Research Projects of Chongqing Science and Technology Program (General Projects) under Grants no. cstc2018jcyjAX0498 and no. cstc2018jcyjAX0297, partially by the Natural Science Foundation of Ningbo (No.2018A610074), partially by General Scientific Research Project of Department of Education of Zhejiang Province (No.Y201942413) and partially by Ningbo 2025 Major Science and Technology Innovation Project (No.2018B10009).
Tingting Gao received her B.S. and M.S. degrees in mathematics from Northeastern University, Shenyang, China, in 2005 and 2008, respectively, and a Ph.D. degree in the School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore. Her research interests include high precision motion control and integrative approach for controller design for optimal performance.
Jiangshuai Huang received his B.Eng. and M.Sc. degrees in the School of Automation from Huazhong University of Science & Technology, Wuhan, China in July 2007 and August 2009, respectively, and a Ph.D. from Nanyang Technological University in 2015. He was a Research Fellow in the Department of Electricity and Computer Engineering, National University of Singapore from August 2014 to September 2016. He is currently a professor in the School of Automation, Chongqing University, Chongqing, China. His research interests include adaptive control, nonlinear systems control, underactuated mechanical system control and multi-agent system control.
Rui Ling received his B.S., M.S., and Ph.D. degrees in automation from Chongqing University, Chongqing, China, in 2002, 2009, and 2015, respectively. He is currently a professor with the College of Automation, Chongqing University. He became a Visiting Scholar at the Colorado Power Electronics Center, Boulder, CO, USA, in 2012. He has published more than 30 publications and holds eight Chinese patents. His current research interests include model and control of renewable energy systems and digital control of switchedmode power converters.
Yong Zhou received his B.Eng. and M.Eng. degrees in electrical engineering from Zhejiang University, Hangzhou, China, in 2003 and 2006, respectively, and a Ph.D. degree in the School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore in 2014. His research interests includes robust nonlinear control, sliding-mode control, and precision motion control. Now he is with Yiheng Technol Co Ltd, Ningbo, Zhejiang, China.
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Gao, T., Huang, J., Ling, R. et al. Adaptive Event-triggered Control of a Class of Series Elastic Actuator System. Int. J. Control Autom. Syst. 19, 2536–2543 (2021). https://doi.org/10.1007/s12555-020-0220-4
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DOI: https://doi.org/10.1007/s12555-020-0220-4