Previous researches about vehicle lateral dynamics mainly focus on one or several specific working conditions and make simulation analysis in the time domain to compare the quality of the steering control system, which cannot compare the performance of the controller as a whole. In this article, an innovative concept was proposed to compare the vehicle steering controller. Combined with the bifurcation theory, the performance of three different steering control systems (front-wheel steering system, four-wheel steering system, and direct yaw-moment control [DYC] system) can be compared intuitively from the phase plane. First of all, taking the front-wheel steering system as the research object, the state phase trajectory of the vehicle under certain speed and different front-wheel steering angle inputs is analyzed, based on the established two degrees-of-freedom (2-DOF) model of vehicle lateral dynamics. Then the influence of the front-wheel steering angle and vehicle speed on the lateral dynamics is further studied, and the stable driving area of the front-wheel steering system on a high- and low-adhesion road is calculated, respectively. Finally, the phase plane and time-domain simulations of the four-wheel steering system and the DYC system are carried out. The results show that compared with the front-wheel steering system, the stable driving area of the four-wheel steering control system is significantly increased, and the stability of the DYC system is the best.


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    Title :

    Comparative Study on Bifurcation and Stability Control of Vehicle Lateral Dynamics


    Additional title:

    Sae Int. J. Veh. Dyn., Stab., and Nvh


    Contributors:
    Huang, Chaoqun (author) / Jiang, Chengyue (author) / Lai, Fei (author)


    Publication date :

    2021-11-09


    Size :

    18 pages




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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