The invention relates to the technical field of suspension control systems of vehicles, in particular to an active suspension control system of an LQR controller based on genetic algorithm optimization, and in the control system, the LQR controller is adopted to control an active suspension system. Optimal values of q1, q2 and q3 in an LQR controller are searched by adopting a genetic algorithm, and q1, q2 and q3 are weighting coefficients of the vertical acceleration of a vehicle body, the dynamic deflection of a suspension and the dynamic displacement of a tire respectively. According to the method, the defect that in a traditional LQR control method, weighting matrixes Q and R are determined through experience subjectivity is overcome. According to the method, a vehicle active suspension model and a road input model are established, and the LQR controller optimized by the genetic algorithm is applied to an active suspension system. According to the method, the vertical acceleration of the vehicle body and the dynamic deflection of the suspension can be obviously reduced, and the influence of the dynamic displacement of the tire is small, so that the active suspension control system of the LQR controller optimized based on the genetic algorithm is better.

    本发明涉及车辆的悬架控制系统技术领域,尤其是一种基于遗传算法优化的LQR控制器的主动悬架控制系统,所述控制系统中,采用LQR控制器对主动悬架系统进行控制。采用遗传算法寻找LQR控制器中的q1、q2、q3的最优值,q1、q2、q3分别为车身垂向加速度、悬架动挠度和轮胎动位移的加权系数。本发明克服了传统的LQR控制方法中,由经验主观性确定加权矩阵Q和R的缺点。本发明建立了车辆主动悬架模型和道路输入模型,并将遗传算法优化的LQR控制器应用于主动悬架系统中。本发明可以显著减小车身垂向加速度与悬架动挠度,而轮胎动位移的影响不大,因此本发明的基于遗传算法优化的LQR控制器的主动悬架控制系统是较优的。


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    Title :

    Active suspension control system of LQR controller based on genetic algorithm optimization


    Additional title:

    基于遗传算法优化的LQR控制器的主动悬架控制系统


    Contributors:
    XIONG XIN (author) / CHEN JIALING (author) / YANG GANG (author) / LIU YAMING (author) / PAN ZEYU (author) / CAO ZHIJIAN (author) / WANG TAO (author)

    Publication date :

    2024-08-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge



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