In this article, an adaptive fault-tolerant control scheme is proposed for nonlinear systems with actuator redundancy. To simultaneously consider multiple types of actuator faults and enable the use of an ideal system with nonlinear dynamics, the $\mathcal {L}_1$ adaptive control scheme for nonlinear time-varying reference systems is extended to systems with redundant inputs and an input gain uncertainty. The time-varying state-dependent additive uncertainty and the effectiveness of each input are selected as the adaptive parameters. A fixed, predictable control allocation is achieved through a feedback loop within the control block. The conditions for the performance bounds on the system relative to the ideal system are derived. It is shown that the performance bounds can be arbitrarily improved by increasing the adaptation rate and the feedback gain. The proposed adaptive control scheme is applied to the fault-tolerant control of an aircraft using a backstepping controller as a baseline controller, and numerical simulations are conducted to demonstrate the performance of the proposed controller for various fault scenarios. Monte Carlo simulations are conducted to verify the robustness property of the proposed controller.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Adaptive Fault Tolerant Flight Control for Input Redundant Systems Using a Nonlinear Reference Model


    Contributors:


    Publication date :

    2021-10-01


    Size :

    3990915 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





    FAULT-TOLERANT FLIGHT CONTROL SYSTEM WITH SIMPLE ADAPTIVE CONTROL CONSIDERING PILOT INPUT

    Takase, R. / Entzinger, J. O. / Suzuki, S. | British Library Conference Proceedings | 2018



    Fault-Tolerant Adaptive Flight Control System Using Feedback Linearization

    Namba, T. / Uchiyama, K. / American Institute of Aeronautics and Astronautics; Conferderation of European Aerospace Societies | British Library Conference Proceedings | 2011