A modified derivation of nonlinear dynamic inversion provides the theoretical underpinnings for a reconfigurable control law for aircraft that have suffered combinations of actuator failures, missing effector surfaces, and aerodynamic changes. The approach makes use of acceleration feedback to extract information pertaining to any aerodynamic change and thus does not require a complete aerodynamic model of the aircraft. The control law does require feedback of effector positions to accommodate actuator dynamics. Both accelerometer and rate gyro failure detection and isolation (FDI) systems are implemented, allowing up to three independent failures for each FDI system as long as they are in different axes. Nonlinear simulation results show that the FDI systems improve the robustness to accelerometer/rate gyro uncertainties. An advanced tailless aircraft model is used to demonstrate the concepts. The simulation includes accelerometer and rate gyro noise and bias, failures due to accelerometers, rate gyros, and actuators, and modeled missing surfaces that cause airplane aerodynamic changes.


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    Titel :

    Reconfigurable NDI controller using inertial sensor failure detection & isolation


    Beteiligte:
    Bacon, B.J. (Autor:in) / Ostroff, A.J. (Autor:in) / Joshi, S.M. (Autor:in)


    Erscheinungsdatum :

    2001


    Format / Umfang :

    11 Seiten, 20 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




    Reconfigurable NDI controller using inertial sensor failure detection & isolation

    Bacon, B.J. / Ostroff, A.J. / Joshi, S.M. | IEEE | 2001



    Failure Isolation for a Minimally Redundant Inertial Sensor System

    Harrison, James V. / Chien, Tze-Thong | IEEE | 1975


    Fault-tolerant Strapdown Inertial Measurement Unit: Failure Detection and Isolation Technique

    Vodicheva, L. V. / Scientific Council of the Academy of Sciences on the Problems of Motion Control and Navigation / State Research Center of the Russian Federation; Central Scientific and Research Institute "Elektropribor" et al. | British Library Conference Proceedings | 1999