Automated Manual Transmission (AMT) is suitable for heavy-duty vehicles to offer an easy drive and good fuel efficiency. After the dynamics and control problems of gear upshift of AMT are described in detail, Model Predictive Control (MPC), together with a shaft torque observer, is adopted to address these challenging control problems. It is demonstrated through simulations that by using the proposed control scheme of gear shifting, a very short torque interruption time can be achieved, while the shift shock is kept small enough. One of the findings of this paper is to use the clutch friction torque as the compensation for the traction interruption, which is realised through the critical enabling technology i.e., MPC. Although it has not been verified by experiments, the simulation results show that by using the proposed control scheme, including the model predictive controllers and the shaft torque observer, very short torque-interruption time can be obtained while the shift shock is kept small enough. Future work includes experimental tests, parameter adaptation to changing friction coefficient and integration with other active driveline systems.


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    Title :

    Dynamics and control of gear upshift in automated manual transmissions


    Additional title:

    Dynamik und Regelung der Gang-Hochschaltung in automatisierten Handschaltgetrieben


    Contributors:
    Gao, Bingzhao (author) / Lu, Xiaohui (author) / Chen, Hong (author) / Lu, Xintian (author) / Li, Jun (author)

    Published in:

    Publication date :

    2013


    Size :

    23 Seiten, 9 Bilder, 1 Tabelle, 39 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





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