A system and method of controlling a continuously variable transmission with variator speed ratio (VSR) closed-loop feedback is provided. The method includes determining a desired VSR based on at least one of the driver and vehicle inputs, determining a motor position adjustment needed to adjust the position of a roller to achieve the desired VSR, driving the motor based on the determined motor position adjustment needed, sensing a transmission output speed as the motor is being driven, determining an actual VSR as the motor is being driven, and providing closed-loop feedback corresponding to any difference between the actual VSR and the desired VSR and driving the motor to eliminate the difference, thereby achieving the desired VSR.


    Access

    Download


    Export, share and cite



    Title :

    Control system and method for continuously variable transmission with variator speed ratio closed-loop feedback


    Contributors:

    Publication date :

    2018-02-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F16H Getriebe , GEARING / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / F02B INTERNAL-COMBUSTION PISTON ENGINES , Brennkraftmaschinen mit innerer Verbrennung mit Verdrängerwirkung / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / G05B Steuer- oder Regelsysteme allgemein , CONTROL OR REGULATING SYSTEMS IN GENERAL / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung



    Tilting ball variator continuously variable transmission torque vectoring device

    VERSTEYHE MARK R J / DUCHENE THIBAUT E / BYLTIAUW MATTHIAS W J | European Patent Office | 2016

    Free access


    Power reversing tractor transmission system of main clutch between main speed variator and auxiliary speed variator

    CHAI JINGYANG / WANG SHIQIANG / WEI ZHIHONG et al. | European Patent Office | 2015

    Free access

    HYBRID ELECTRIC POWERTRAIN CONFIGURATIONS WITH A BALL VARIATOR CONTINUOUSLY VARIABLE TRANSMISSION USED AS A POWERSPLIT

    HAKA RAYMOND J / KUMAR KRISHNA / SMITHSON ROBERT A et al. | European Patent Office | 2018

    Free access

    Hybrid transmission with variator

    JANSON DAVID ALLEN | European Patent Office | 2019

    Free access