Chang Jing, Cieslak Jérôme, Guo Zongyi, Henry David
School of Aerospace Science and Technology, Xidian University, 710126, Xi'an, China.
University of Bordeaux, IMS Laboratory, F-33400 Talence, France.
ISA Trans. 2021 May;111:8-23. doi: 10.1016/j.isatra.2020.10.061. Epub 2020 Nov 9.
This paper presents an active Fault-Tolerant Control (FTC) framework to accommodate the actuator faults by using a Fault Estimation (FE) module fitted with an adaptive control law. It focuses on the problem of fault estimation based fault tolerant control for linear uncertain system with mitigation of the reconfiguration transients. In this work, a second-order sliding mode observer is designed to reconstruct the Loss of Effectiveness (LoE) of the actuators. The use of a bumpless strategy to cleverly manage the transient behavior where fault estimation is different from the real one due to an abrupt fault occurrence. Signals provided by the FE module are next used by an augmented fault-tolerant control allocation scheme to accommodate the fault. More precisely, the flight state tracking problem has been addressed with a robust adaptive model-reference Integral Sliding Mode (ISM) control law in a state feedback setting. Next, the problem of stability and performance of the overall FTC scheme with taking into account both FE performance and control law is rigorously considered. At the end, simulation examples on an aircraft from a European program are used to illustrate the effectiveness of the proposed approach.
本文提出了一种主动容错控制（FTC）框架，通过使用配备自适应控制律的故障估计（FE）模块来适应执行器故障。它专注于具有减轻重构瞬态的线性不确定系统基于故障估计的容错控制问题。在这项工作中，设计了一个二阶滑模观测器来重构执行器的有效性损失（LoE）。使用一种无冲击策略来巧妙地管理由于突然发生故障导致故障估计与实际情况不同时的瞬态行为。FE模块提供的信号接下来被一种增强的容错控制分配方案用于适应故障。更确切地说，在状态反馈设置下，利用鲁棒自适应模型参考积分滑模（ISM）控制律解决了飞行状态跟踪问题。接下来，严格考虑了同时兼顾FE性能和控制律的整体FTC方案的稳定性和性能问题。最后，使用来自一个欧洲项目的飞机上的仿真示例来说明所提方法的有效性。
