The capability of compensating automatically for a failure in an actuator and the associated drive circuit is enhanced by providing a dual channel actuator, each channel having a drive coil and a position sensor tracking the position of the actuator output shaft. A separate circuit is provided for each actuator channel to detect drive loop failures and hydraulic failures. When the drive loop of one channel fails, it is disengaged, and the gain in the remaining drive loop is doubled to maintain authority. In an embodiment, the remaining drive loop cannot disengage when certain criteria, relating to the failure of associated actuators, are met. The invention is particularly useful for aerospace applications.


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    Title :

    Redundant control system for X-wing valve actuators


    Contributors:

    Publication date :

    1986-06-10


    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English







    REDUNDANT VALVE SYSTEM

    VILLANUEVA CARLOS / LOPEZ BILL | European Patent Office | 2023

    Free access