【作者】 李敏； 李化义； 刘明； 张迎春； 耿云海；

【Author】 LI Min;LI Hua-yi;LIU Ming;ZHANG Yingchun;GENG Yumhai;School of Astronautics,Harbin Institute of Technology;Shenzhen Aerospace Dongfanghong HIT Satellite Company Ltd;

【机构】 哈尔滨工业大学航天学院； 深圳东方红海特卫星技术有限公司；

【摘要】 本文研究了一类执行机构故障和状态依赖的攻击信号情况下的Markov系统自适应事件触发滑模容错控制问题。首先设计了一种线性滑模面,并给出了滑模面的稳定条件。其次,设计了一种可行的事件触发条件,给出了事件触发条件参数的选择方法。利用受损的事件触发状态向量和滑模面设计了自适应事件触发滑模容错控制策略,实现对未知参数的估计和补偿,保证系统的稳定性和滑模面的可达性,克服执行机构故障、事件触发状态误差和攻击信号的影响。分析了任意两个连续触发事件之间的时间间隔。最后通过仿真算例验证了所设计的算法的有效性。更多还原

【Abstract】 The problem of adaptive event-triggered sliding mode fault tolerant control(SMFTC) for a class of Markov jump systems with actuator failure and state-dependent attacks is investigated. A linear sliding surface is designed, and the sufficient condition which can ensure the stability of sliding motion is given. To reduce the communication burden of system, a suitable event-triggered condition is developed. To ensure the stability of overall closed-loop control system and reachability of sliding surface, a new adaptive event-triggered SMFTC is proposed. Under the proposed control law, the influence of parameter uncertainties, attacks, actuator failure and state error induced by eventtriggered mechanism can be completely compensated. The positive minimal inter–event time interval is estimated, which shows that the Zeno behavior is avoided. Finally, an example is given to show the effectiveness of the proposed approach.更多还原