控制理论(社会学)
执行机构
观察员(物理)
补偿(心理学)
计算机科学
国家观察员
模式(计算机接口)
信息物理系统
国家(计算机科学)
控制工程
工程类
控制(管理)
人工智能
非线性系统
算法
物理
操作系统
量子力学
心理学
精神分析
作者
Ke He,Tieshan Li,Yue Long,Ju H. Park,C. L. Philip Chen
摘要
Abstract In this paper, the secure state estimation attack and reconstruction problems are considered for linear cyber‐physical systems (CPSs) under actuator attacks and unknown disturbances. By introducing a continuous sliding mode observer with an exponential reaching law strategy, the dynamic quality of approach motion is greatly improved and the chattering is eliminated. Then by transforming the original system into a special attack channel separation form so that an improved sliding mode observer with disturbance compensation is obtained to solve the secure state estimation problem. In addition, with the obtained observer's information, not only the actuator attack can be reconstructed but also the estimation of the disturbance can be obtained. Meanwhile, the influence of disturbance estimation error on attack reconstruction can be attenuated. Finally, simulations on a VTOL aircraft are presented to verify the effectiveness of the proposed scheme.
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