By taking into account the case of motor-vehicle with continuously variable transmission (CVT), the paper presents the motor vehicle velocity control that ensures the minimization of the following criteria: (1) acceleration time; (2) accelerating time for a given traveled distance; (3) accelerating index. As a preliminary the analysis of the motion equation of a motor vehicle with CVT and of the phase trajectories emphasizes certain peculiarties of motor regimes. The optimal control problem is appropriately formulated for the three criteria and solved by applying Pontryagin's maximum principle. It is shown that for the three criteria there are singular solutions of the optimal control problem. In the case of the criterion (1), for usual values of the CVT ratios, the numerical computations prove that the singular phase trajectory almost coincides with the trajectory corresponding to the CVT ratio which provides the ideal traction hyperbole. In the case of the criterion (2), depending on the final conditions, there are two singular solutions. The first of them is nearly enough to the solution of the criterion (1) when the given traveled distance is, in general, more than 500 m. The latter solution is very close to the singular solution of the criterion (1). In the case of the criterion (3), the singular trajectory is similar to the first solution of the criterion (2). The paper analyses different variants of optimal trajectories pointing out control switching points.


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    Titel :

    Time-optimal velocity control of a motor-vehicle with CVT


    Weitere Titelangaben:

    Zeitoptimale Geschwindigkeitsregelung eines Kraftfahrzeugs mit stufenlosem Getriebe


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    2002


    Format / Umfang :

    35 Seiten, 19 Bilder, 19 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




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    Stoicescu,A.P. / Univ.Politehnica of Bucharest,RO | Kraftfahrwesen | 2002


    Time-optimal velocity control of a motor-vehicle with CVT

    Stoicescu, Aurel P. | Online Contents | 2002


    On fuel-optimal velocity control of a motor vehicle

    Stoicescu,A.P. / Polytechnic Inst.of Bucharest,RO | Kraftfahrwesen | 1995


    On fuel-optimal velocity control of a motor vehicle

    Stoicescu, A.P. | Online Contents | 1995


    On fuel-optimal velocity control of a motor vehicle

    Stoicescu, A.P. | Tema Archiv | 1995