Adaptive fuzzy-based composite anti-disturbance control for a class of switched nonlinear systems with unknown backlash-like hysteresis |
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| Authors: | Jing Xie Ping Sun Dong Yang |
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| Institution: | 1. School of Artificial Intelligence, Shenyang University of Technology, Shenyang, China;2. College of Engineering, Qufu Normal University, Rizhao, Shandong, China;1. Key Laboratory of Advanced Process Control for Light Industry (Ministry of Education), School of Internet of Things Engineering, Jiangnan University, Wuxi 214122, PR China;2. School of Automation, Nanjing University of Science and Technology, Nanjing 210094, PR China;1. Science and Technology on Aerospace Flight Dynamics Laboratory, School of Astronautics, Northwestern Polytechnical University, Xi’an, 710072, China;2. Research and Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, 518057, China;1. School of Mathematics and Statistics, Shandong University of Technology, Zibo 255000, China;2. College of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao 266590, China |
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| Abstract: | For a class of switched nonlinear systems with unmatched external disturbances and unknown backlash-like hysteresis, an adaptive fuzzy-based control strategy is proposed to handle the anti-disturbance issue. The unmatched external disturbances come from a switched exosystem. Our aim is to achieve the output tracking performance and the disturbance attenuation by using the adaptive fuzzy-based composite anti-disturbance control technique. First, based on the fuzzy logics, we design a switching adaptive fuzzy disturbance observer to estimate unmatched external disturbances. Second, a composite switching adaptive anti-disturbance controller is constructed. By means of the backstepping technique, disturbance estimations are added in each virtual control to offset the unmatched disturbances, which results in the different coordinate transformations. At last, the availability of the proposed approach is illustrated by a mass-spring-damper system. |
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