期刊
AUTOMATICA
卷 82, 期 -, 页码 79-92出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.automatica.2017.04.032
关键词
Event-triggering; Network-induced constraints; Sliding mode control; Stochastic systems
资金
- National Natural Science Foundation of China [61525303, 61503099, 61622302, 61573070]
- Top-Notch Young Talents Program of China
- Fok Ying Tung Education Foundation [141059]
- China Postdoctoral Science Foundation [2016T90291]
- Self-Planned Task of State Key Laboratory of Robotics and System (HIT) [SKLRS201713A]
This paper is concerned with event-triggered sliding mode control (SMC) for uncertain stochastic systems subject to limited communication capacity. We consider the stochastic perturbation, exogenous disturbance and the network-induced communication constraints in a whole framework of SMC design. The measurable output is adequately sampled for periodic computation of a designed event trigger. Network-induced delays are characterized in the transmission over a shared network communication from sensor to controller. An event-triggered zero-order-hold (ZOH) is employed to keep receiving and sending the delayed measurement for control updating, and a state observer is designed to estimate the system state and to facilitate the design of sliding surface. Then, based on the measurement and observer's outputs, a novel SMC law is presented. The stochastic stability for the overall closed-loop system is analyzed, and the exogenous disturbance is attenuated in an H-infinity sense. Furthermore, the presented event -triggered SMC methods are successfully applied to multi-loop control case considering shared communication limitation. Simulation results are provided to verify the effectiveness of the proposed design scheme. (C) 2017 Elsevier Ltd. All rights reserved.
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