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Active fault tolerant control scheme for aircraft with dissimilar redundant actuation system subject to hydraulic failure

机译：具有液压故障的冗余驱动系统不同的飞机的主动容错控制方案

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摘要

In this paper, an active fault tolerant control (AFTC) scheme is proposed for more electric aircraft (MEA) equipped with dissimilar redundant actuation system (DRAS). The effect of various fault/failure of hydraulic actuator (HA) on the system performance is analyzed in this work. In nominal condition, the state feedback control law is designed for primary control surfaces. In the presence of fault/failure of certain HA, control allocation (CA) scheme together with integral sliding mode controller (ISMC) is retrofitted with existing control law and engaged the secondary (redundant) actuators into the loop. A modified recursive least square (RLS) algorithm is proposed to identify the parametric faults in HA and to measure the effectiveness level of the actuator. In an event of failure of all HA's in the system, electro hydraulic actuators (EHA) are taken in loop to bring the system back to its nominal operation. In order to stabilize the closed-loop dynamics of HA and EHA, fractional order controllers are designed separately for each actuator. Simulations on the lateral directional model of aircraft demonstrated the effectiveness of the proposed scheme as compared to the existing methods in the literature. (C) 2018 The Franklin Institute. Published by Elsevier Ltd. All rights reserved.
机译：本文提出了一种主动容错控制（AFTC）方案，该方案适用于配备了不同冗余驱动系统（DRAS）的更多电动飞机（MEA）。在这项工作中，分析了液压执行器（HA）的各种故障/故障对系统性能的影响。在名义条件下，状态反馈控制定律是为主要控制表面设计的。如果存在某些HA的故障/失败，则将控制分配（CA）方案与集成滑模控制器（ISMC）一起使用现有的控制法则进行改造，并将辅助（冗余）执行器接合到环路中。提出了一种改进的递推最小二乘（RLS）算法，以识别HA中的参数故障并测量执行器的有效性水平。如果系统中所有HA均发生故障，则将电动液压执行器（EHA）置于环路中，以使系统恢复其正常运行。为了稳定HA和EHA的闭环动力学，为每个执行器分别设计了分数阶控制器。飞机横向方向模型的仿真证明了与文献中的现有方法相比，该方案的有效性。 （C）2018富兰克林研究所。由Elsevier Ltd.出版。保留所有权利。

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  • 来源
    《Journal of the Franklin Institute》 |2019年第3期|1302-1332|共31页
  • 作者

    Ijaz Salman; Yan Lin; Hamayun Mirza Tariq; Shi Cun;

  • 作者单位

    Beihang Univ, Sch Automat & Elect Engn, Beijing, Peoples R China|COMSATS Univ Islamabad, Dept Elect & Comp Engn, Lahore Campus, Lahore, Pakistan;

    Beihang Univ, Sch Automat & Elect Engn, Beijing, Peoples R China;

    COMSATS Univ Islamabad, Dept Elect & Comp Engn, Lahore Campus, Lahore, Pakistan;

    Beihang Univ, Sch Automat & Elect Engn, Beijing, Peoples R China;

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