This citation summarizes a one-page announcement of technology available for utilization. Simply duplicating the motor and gears does not significantly improve the reliability of a mechanical drive train. There is always the possibility of a single-point failure, in which a failure in one drive path jams the other drive path as well. Now, however, an arrangement of two harmonic drive mechanisms offers true redundancy. One mechanism continues transmitting power regardless of how the other fails. Besides being highly reliable, the dual harmonic drive is compact, occupying a smaller volume than a conventional gear train for the same power and speed reduction. This drive train can also be designed to be 'backdrivable' to the condition in which a torque applied at the output shaft of a nonoperating electromechanical drive will cause rotation of the unit input shaft and motor....FOR ADDITIONAL INFORMATION: Contact: Tech. Transfer Div., P.O. Box 8757, BWI Airport, MD 21240; (301) 621-0100. Refer to: NPO-15317.


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    Title :

    Redundant Gear Train: Tandem harmonic drives are immune to single-point failure


    Publication date :

    1983


    Size :

    1 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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