The suitability of traction drives for a wide class of aerospace control mechanisms is examined. Potential applications include antenna or solar array drive positioners, robotic joints, control moment gyro (CMG) actuators and propeller pitch change mechanisms. In these and similar applications the zero backlash, high torsional stiffness, low hysteresis and torque ripple characteristics of traction drives are of particular interest, as is the ability to run without liquid lubrication in certain cases. Wear and fatigue considerations for wet and dry operation are examined along with the tribological performance of several promising self lubricating polymers for traction contracts. The speed regulation capabilities of variable ratio traction drives are reviewed. A torsional stiffness analysis described suggests that traction contacts are relatively stiff compared to gears and are significantly stiffer than the other structural elements in the prototype CMG traction drive analyzed. Discussion is also given of an advanced turboprop propeller pitch change mechanism that incorporates a traction drive.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Application of traction drives as servo mechanisms


    Contributors:


    Publication date :

    1985-08-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English




    Servo Drives

    Frigeni, Fabrizio | Springer Verlag | 2022


    ELECTRIC TRACTION DRIVES

    POHL BRAD P | European Patent Office | 2016

    Free access

    Traction drives principles

    Najlepszy, F. | Tema Archive | 1985


    Induction motor drives for traction application

    Ferranti, M. / Feraris, L. / Laner, E. et al. | Tema Archive | 1993


    Electric traction drives

    POHL BRAD P | European Patent Office | 2018

    Free access