An improved event-triggered control method for fuzzy systems under membership functions online learning |
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| Institution: | 1. College of Control Science and Engineering, Bohai University, Jinzhou, Liaoning 121013, China;2. School of Automation, Qingdao University, Qingdao, Shandong 266071, China;3. School of Mathematics and Statistics, Xinyang Normal University, Xinyang, Henan 464000, China;1. School of Information and Control Engineering, Qingdao University of Technology, Qingdao, Shandong 266520, PR China;2. School of Engineering, Qufu Normal University, Rizhao, Shandong 276826, PR China;3. School of Automation, Southeast University, Nanjing, Jiangsu 210096, PR China;1. School of Automation, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China;2. School of Automation, Southeast University, Nanjing, Jiangsu, 210096, China;1. Department of Mathematics, Guizhou University, Guiyang, Guizhou 550025, China;2. CHP-LCOCS, School of Mathematics and Statistics, Hunan Normal University, Changsha, Hunan 410081, China |
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| Abstract: | This paper is concerned with the problem of adaptive event-triggered (AET) based optimal fuzzy controller design for nonlinear networked control systems (NCSs) characterized by Takagi–Sugeno (T–S) fuzzy models. An improved AET communication scheme with a memory adaptive rule is proposed to enhance the utilization of the state response vertex data. Different from the existing ET based results, the improved AET scheme can save more communication resources and acquire better system performance. The sufficient criteria of performance analysis and controller design are presented for the closed-loop control system subject to mismatched membership functions (MFs) and AET scheme. And then, a new MFs online learning algorithm on the basis of the gradient descent approach is employed to optimize the MFs of fuzzy controller and obtain optimal fuzzy controller for further improving system performance. Finally, two simulation examples are presented to verify the advantage and effectiveness of the provided controller design technique. |
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