We extracted an original trade-off strategy between the longitudinal traction/braking force and the cornering force by using jerk information to observe an expert driver's voluntary braking and turning action. Using the expert driver's strategy, we newly developed control, called "G-Vectoring control (GVC)", is basically an automatic longitudinal acceleration control in accordance with vehicle lateral jerk caused by driver's steering manoeuvres. With the control, the direction of resultant acceleration (G) seamlessly changes (i.e. vectoring). Then, we introduced GVC equipped real test vehicle realized by brake by wire technology and executed a detailed examination on a test track. We confirmed that the vehicle motion in view of both handling and ride quality have improved dramatically. A dynamic analysis and simulation examination using a four-wheel full vehicle model, and actual tests of a test vehicle fitted with G-Vectoring control were conducted to examine the G-Vectoring control on the acceleration and deceleration of a vehicle according to the change in lateral motion or steering input, and the following findings were obtained. (1) The agility and stability can be suitably controlled by using the influence of the vertical load shift and traction force exerted on the cornering force in each stage of a turn, the beginning of the turn, the turn, and the end of the turn. (2) When beginning the turn, a motion that levels the tire workload of all four wheels can be achieved. (3) It is possible to decelerate by forcing a trade-off between the lateral acceleration and without greatly changing the absolute value of the synthetic acceleration longitudinally and laterally (4) The unstable behaviours when the lateral acceleration reverses on the low friction surface can be stabilized for a front-wheel drive car by using acceleration control. (5) By adequate deceleration control, the maximum steering angle during cornering is reduced significantly, and course traceability can be improved dramatically. (6) The roll rate and pitch rate can be reduced by a G-Vectoring mechanism. (7) The acceleration controlling by G-Vectoring has the potential to maintain a driver's feeling of compatibility.


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    Titel :

    G-vectoring, the "real" vehicle longitudinal and lateral combination control


    Beteiligte:
    Yamakado, Makoto (Autor:in) / Takahashi, Junya (Autor:in) / Saito, Shinjiro (Autor:in) / Abe, Masato (Autor:in)


    Erscheinungsdatum :

    2011


    Format / Umfang :

    21 Seiten, 21 Bilder, 6 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Datenträger


    Sprache :

    Englisch




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