While control strategies of powertrains equipped with ratio controlled continuously variable transmissions (RC/CVT), such as the pulley/belt variator, have been covered in various publications, much research remains to be done toward the torque controlled CVT (TC/CVT), such as the full toroidal variator. This paper introduces the basis for the engine speed control of powertrains equipped with a TC/CVT. Input-output (I-O) feedback linearization is applied as it fulfills all control objectives of CVT-based powertrains, while minimizing the amount of controller gain points. Firstly, a model of the TC/CVT powertrain is developed and compared to that of the RC/CVT powertrain. Secondly, the Torque Control Strategy is presented. Thirdly, the performance obtained is discussed with simulation results.
Torque control strategy for continuously variable transmission-based powertrains
Drehmoment-Regelungsstrategie bei Antriebssträngen mit CVT-Getrieben
2008
15 Seiten, 9 Bilder, 27 Quellen
Conference paper
English
Regelungsstrategie , CVT-Getriebe , Anwendung im Fahrzeugbau , Anwendung im Motorenbau , Getriebetechnik , Drehmomentregelung , Drehzahlregelung , Rückkopplung , Linearisierung , Toroidgetriebe , technische Entwicklung , Kraftstoffverbrauch , Schaltverhalten (Getriebe) , theoretisches Modell , Rechnersimulation
Torque Control Strategy for Continuously Variable Transmission-Based Powertrains
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