This paper describes the principle of input torque control system and test results of a double cavity half-toroidal CVT without using torque sensors. The torque command is modified to pressure command for supporting the tangential force of the power roller. The CVT has two feedback loops of the offset of power roller for tilting force control and the pressure difference for supporting load. The pressure is controlled by a 4-way pressure difference servo-valve. The control quality is examined by loading steady-state and step torque on a double cavity half-toroidal CVT with speed ratio range of 1:5.2 and input torque capacity of 370 N m.


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    Title :

    Torque control of a double cavity half-toroidal CVT


    Additional title:

    Drehmomentregelung in einem Halbtoroid-CVT-Getriebe mit doppeltem Hohlraum


    Contributors:
    Tanaka, H. (author)

    Published in:

    Publication date :

    2003


    Size :

    8 Seiten, 11 Bilder, 6 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Torque control of a double cavity half-toroidal CVT

    Tanaka, H. | Online Contents | 2003


    Torque control of a double cavity half-toroidal CVT

    Tanaka,H. / Yokohama National Univ.,JP | Automotive engineering | 2003



    Torque - Distribution control by a double-cavity half-toroidal CVT for four wheel driveline

    Sato, Y. / Tanaka, H. / International Federation of Automatic Control | British Library Conference Proceedings | 1997


    Development of a Large Torque Capacity Half-Toroidal CVT

    Mori, Haruhito / Kumura, Haruyoshi / Sugihara, Jun et al. | SAE Technical Papers | 2000