This paper describes a newly developed adaptive cruise control (ACC) system using continuously variable transmission (CVT) gear ratio control. This system provides excellent headway distance control performance at a reasonable cost. With this system, headway distance is measured with a laser radar, and the throttle position and CVT gear ratio are controlled under both acceleration and deceleration situations.The new ACC system consists of a target headway distance calculator, a headway distance controller, a vehicle velocity controller and a drive torque controller. Using a drive torque control method that was newly developed based on integrated control of engine torque and the CVT gear ratio, the following benefits are obtained. As a result, sufficient ACC performance can be attained even in 2.0-liter class vehicles. This paper describes the system features, design concept and benefits of the system, which are illustrated with simulation and experimental results.


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    Title :

    Adaptive Cruise Control System Using CVT Gear Ratio Control


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    Automotive and Transportation Technology Congress and Exposition ; 2001



    Publication date :

    2001-10-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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