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Fault tolerant control of unstable LPV systems subject to actuator saturations using virtual actuators

机译:使用虚拟执行器,对不稳定的LPV系统进行容错控制,使其受到执行器饱和的影响

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An active fault tolerant control (FTC) strategy for open-loop unstable linear parameter varying (LPV) systems subject to actuator saturations and faults is proposed in this paper. At first, the nominal controller is designed using a direct approach that takes into account the actuator limits. Later, virtual actuators are added to the control scheme, such that the faulty plant is reconfigured, and the fault is hidden from the controller point of view. Conditions for designing the virtual actuator gains are designed, aiming at guaranteeing that if at the fault isolation time the closed-loop system state is inside a region defined by a value of the Lyapunov function, the state trajectory will converge to zero despite the appearance of faults within a predefined set. The theoretical results are demonstrated using a numerical example.
机译:提出了一种针对执行器饱和和故障的开环不稳定线性参数变化(LPV)系统的主动容错控制(FTC)策略。首先,标称控制器是使用直接方法设计的,该方法考虑了执行器限制。之后,将虚拟执行器添加到控制方案中,以便对故障工厂进行重新配置,并从控制器的角度隐藏故障。设计用于设计虚拟执行器增益的条件,旨在确保如果在故障隔离时闭环系统状态位于由Lyapunov函数的值定义的区域之内,尽管出现了如下情况,状态轨迹仍将收敛为零。预定义集中的故障。数值实例证明了理论结果。

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