The invention discloses a semi-active suspension switching control design method for different road working conditions, which belongs to the technical field of vehicle stability control and comprises the following steps: 1) acquiring a dynamic response signal of a suspension system in real time through a vehicle sensor; 2) classifying the road flatness by using the real-time response signal based on a power spectral density estimation method; 3) designing a vehicle semi-active suspension switching control system according to a classification result to adapt to different road working conditions; wherein the control parameters of each subsystem in the suspension system are optimized so as to obtain the optimal dynamic performance under different road working conditions. According to the method, road flatness is estimated by using vehicle vertical acceleration data, and for the stationary random process data with trend terms, simplification processing is carried out by adopting an autoregression-based prediction model; in the aspect of control parameter optimization, an algorithm framework combining PID and cuckoo search is adopted so as to obtain the optimal control dynamic performance, and the movement stability of the vehicle under different working conditions can be remarkably improved.

    本发明公开一种面向不同道路工况的半主动悬架切换控制设计方法,属于车辆稳定性控制技术领域,步骤为:1)通过车辆传感器实时获取悬架系统的动态响应信号;2)利用实时响应信号基于功率谱密度估计方法对道路平整度进行分类;3)针对分类结果设计车辆半主动悬架切换控制系统以适应不同道路工况;其中,对悬架系统中各子系统控制参数进行优化,以获得不同道路工况下的最优动态性能。本发明利用车辆垂直加速度数据对道路平整度进行估计,针对这一类带趋势项的平稳随机过程数据,采用基于自回归预测模型进行简化处理;在控制参数优化方面,采用PID和布谷鸟搜索相结合的算法框架,以获得最优的控制动态性能,能显著提高车辆在不同工况下运动的稳定性。


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    Title :

    Semi-suspension switching control design for road surface recognition


    Additional title:

    面向路面识别的半悬架切换控制设计


    Contributors:
    ZHANG HUI (author) / TAO SIYOU (author) / CHEN JICHENG (author) / ZHANG YONGKANG (author)

    Publication date :

    2024-05-03


    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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