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Integrated Design of Fault Estimation and Fault-Tolerant Control for Closed-Loop Systems With Uncertain Short Delay

机译:闭环系统具有不确定短延迟的闭环系统的故障估计和容错控制集成设计

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摘要

In this paper, an integrated design scheme of fault estimation (FE) and fault-tolerant control (FTC) is presented for a closed-loop system with uncertain short delay. Firstly, a closed-loop system with uncertain short delay is modeled as a system with uncertain parameters, and a bi-directional robustness interaction of uncertainty between the observer and the control system is analyzed. Then a fault estimation observer and a fault-tolerant controller are constructed, and the integrated design problem is converted into a robust control problem for the augmented system under $H_{infty }$ performance index. Furthermore, the parameters of the fault estimation observer and fault-tolerant controller are solved by Lyapunov function and relaxation methods. Finally, the effectiveness and superiority of the proposed method are verified by an aircraft simulation.
机译:本文介绍了具有不确定延迟不确定的闭环系统的故障估计(FE)和容错控制(FTC)的集成设计方案。首先,分析了具有不确定的延迟不确定的闭环系统作为具有不确定参数的系统,并且分析了观察者与控制系统之间的不确定性的双向鲁棒性相互作用。然后构造了故障估计观察者和容错控制器,并将集成的设计问题转换为<内联公式XMLNS下的增强系统的稳健控制问题:MML =“http://www.w3.org/ 1998 / math / mathml“xmlns:xlink =”http://www.w3.org/1999/xlink“> $ h _ { infty} $ < /内联公式>性能索引。此外,Lyapunov函数和弛豫方法解决了故障估计观察者和容错控制器的参数。最后,通过飞机模拟验证了所提出的方法的有效性和优越性。

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