A concept for the fault-tolerant control of a primary flight control system featuring two parallel electromechanical actuators nominally operating in active-active mode is proposed. A detailed nonlinear model of the system under consideration is created to enable the design of high-level and low-level safety control functions. Three reaction sequences combining five different reactions are proposed for the mitigation of safety-critical faults. Attention is paid to the sequence assigned to those actuator faults that permit the safe continued movement of the control surface while the system operates in active-standby mode. A control concept is developed to reduce the reflected inertial loads in this mode without permanently degrading the system performance. Herewith, the load on the active actuator reaches at the most 95% of the system's limit load when both actuators operate in a highly degraded state, whereas with the original control scheme the limit load is continuously exceeded by 30%.


    Access

    Download


    Export, share and cite



    Title :

    Design of fault-tolerant control functions for a primary flight control system with electromechanical actuators



    Publication date :

    2015-01-01


    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Classification :

    DDC:    620 / 629



    Fault detection and classification for flight control electromechanical actuators

    Ismail, Mohamed A. A. / Balaban, Edward / Spangenberg, Holger | IEEE | 2016


    Model-based design and fault-tolerant control of an actively redundant electromechanical flight control actuation system

    Arriola Gutierrez, David Antonio / Shaker Verlag / Technische Universität Hamburg et al. | TIBKAT | 2019


    Fault Tolerant Flight Control

    Meir Pachter / Yih-Shiun Huang | AIAA | 2003


    Integration and control of electromechanical and electrohydraulic actuators in a hybrid primary flight control architecture

    Cochoy, O. / Carl, U.B. / Thielecke, F. et al. | British Library Conference Proceedings | 2007


    FAULT TOLERANT AIRCRAFT FLIGHT CONTROL SYSTEM

    TELES FERREIRA JOÃO FILIPE / RIBAS GABRIEL OLIVEIRA | European Patent Office | 2024

    Free access