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  • 标题:Event-triggered Discrete-time Sliding Mode Control for High-order Systems via Reduced-order Model Approach
  • 本地全文:下载
  • 作者:Kiran Kumari ; Bijnan Bandyopadhyay ; Johann Reger
  • 期刊名称:IFAC PapersOnLine
  • 印刷版ISSN:2405-8963
  • 出版年度:2020
  • 卷号:53
  • 期号:2
  • 页码:6207-6212
  • DOI:10.1016/j.ifacol.2020.12.1716
  • 语种:English
  • 出版社:Elsevier
  • 摘要:AbstractWe propose the design of event-triggered (ET) discrete-time sliding mode (DTSM) control for a high-order discrete-time system via a reduced-order model-based approach. This design includes a triggering mechanism using a reduced-order state vector and a controller based on the modified Bartoszewicz’ reaching law for a reduced-order model of the system, to stabilize the uncertain high-order system. The main advantages of using a reduced-order vector in the event condition are the low-order synthesis of the controller and the sampling pattern, which may be sparser than the full vector-based design. This motivation arises from the fact that relaxing a few components of the state vector in the triggering mechanism may decrease its rate of violation. An added advantage of the proposal is that the transmission of the reduced-order vector, particularly in a network-based implementation, can outperform the full-order based design due to the severe challenges that exist in the data network. The robust performance for the closed-loop system is achieved using the DTSM control. We show that our proposal guarantees the stability of the full-order plant with the reduced-order triggering mechanism. The control execution is Zeno-free because of the inherent discrete nature of the control. The efficiency of the proposed method is shown using the simulation results of a numerical example.
  • 关键词:KeywordsEvent-triggered controlDiscrete-time sliding modeModel-order reduction
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