An improved memory-event-triggered control for networked control systems |
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| Authors: | Engang Tian Kunyu Wang Xia Zhao Shibin Shen Jinliang Liu |
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| Institution: | 1. School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, PR China;2. School of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 2111106, PR China;3. School of Electrical and Automation Engineering, Nanjing Normal University, Nanjing 210042, China;4. College of Information Engineering, Nanjing University of Finance and Economics, Nanjing, Jiangsu 210023, PR China |
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| Abstract: | In this paper, the H∞ control problem is investigated for a class of networked control systems with network-induced delay. A memory event-triggered scheme (METS) is proposed to reduce the redundant packet transmission in the network channel. Different from the normal event-triggered scheme (ETS), some recent released packets are stored at the event generator and controller sides, which are utilized for the first time to generate the triggered events and design the memory-based controller. The proposed METS has the following two merits. (1) The information of certain recent released signals are first utilized, which helps to improve the triggering instants at the crest or trough of the responses. (2) A state-dependent time-varying threshold parameter is designed, which can adjust the packet transmission rate according to the information of the state. Based on the proposed METS, a memory event-triggered controller is designed, the controller feedback gains and triggering parameters can be co-designed by solving a set of linear matrix inequalities. Finally, an example is given to illustrate the effectiveness of the proposed method. |
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| Keywords: | Corresponding author |
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