A linear actuator comprising actuator rod 104 extending along stroke axis 102, the rod comprises: first screw thread 108 on the rod outer surface; a sleeve 118 positioned around, and coaxial with, the actuator rod. The sleeve comprises: a second screw thread 120 on the sleeve inner surface engaging the first screw thread, and a third screw thread 128 on the sleeve outer surface. A screw nut 136 engages the third screw thread and is driven by motor 142. In use, the motor applies a torque to the sleeve via the screw nut, when the applied torque is below a threshold value, the sleeve is restricted from rotating about the stroke axis, such that rotation of the screw nut causes linear displacement of the sleeve and actuator rod together along the stroke axis. When the applied torque equals or exceeds the threshold value, the sleeve is able to rotate about the stroke axis, such that rotation of the screw nut causes rotation of the sleeve, and such that rotation of the sleeve causes linear displacement of the actuator rod. This provides a second actuation mode should the first/primary mode jam or fail.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    LINEAR ACTUATOR TOLERANT TO JAM FAILURE MODES


    Weitere Titelangaben:

    LINEARER AKTUATOR MIT STÖRUNGSTOLERANZ GEGENÜBER FEHLERMODI
    ACTIONNEUR LINÉAIRE TOLÉRANT DES MODES DE DÉFAILLANCE DE BLOCAGE


    Beteiligte:
    THOMAS GLYNN (Autor:in) / BUTTERY PAUL (Autor:in)

    Erscheinungsdatum :

    30.07.2025


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    F16H Getriebe , GEARING / B64C AEROPLANES , Flugzeuge



    LINEAR ACTUATOR TOLERANT TO JAM FAILURE MODES

    THOMAS GLYNN / BUTTERY PAUL | Europäisches Patentamt | 2024

    Freier Zugriff

    Failure-Tolerant By-Wire Actuator Interface

    HALLENBECK KEVIN M / GRZEBYK STEVEN J / SMITH JAMES C | Europäisches Patentamt | 2021

    Freier Zugriff

    Jam-tolerant electric linear actuator

    VEILLEUX JR LEO J / RIBAROV LUBOMIR A | Europäisches Patentamt | 2020

    Freier Zugriff


    Fault Tolerant Control of Actuator Failure in Distributed Drive Electric Vehicle

    Limin, Niu / Yiqi, Zhang / Jianmei, Lv et al. | IEEE | 2022