The invention provides a vehicle lateral stability control method based on nonlinear dynamics analysis, which comprises the following steps: S1, establishing a vehicle two-degree-of-freedom lateral nonlinear dynamics system model; s2, selecting the size of a tire slip angle as a prerequisite variable, and establishing a T-S fuzzy model of the tire; s3, the built tire T-S fuzzy model is utilized to analyze the problem of non-linearity of the front and rear tire cornering stiffness, and a two-degree-of-freedom T-S fuzzy model of the vehicle is built; s4, designing an optimal controller according to the comprehensive control system model; and S5, analyzing and verifying the stability of the controller. A T-S fuzzy method is adopted, a plurality of linear local subsystems are mixed to approach a nonlinear system, an optimal tracking controller is designed for the local system under each fuzzy rule, a good control effect is obtained, and the lateral stability of the vehicle is improved.
本发明提供一种基于非线性动力学分析的车辆侧向稳定性控制方法,包括以下步骤,S1:建立车辆二自由度侧向非线性动力学系统模型;S2:选取轮胎侧偏角的大小为前提变量,建立轮胎的T‑S模糊模型;S3:利用所建立的轮胎T‑S模糊模型,分析前后轮胎侧偏刚度非线性的问题,建立车辆的二自由度T‑S模糊模型;S4:根据所述综合控制系统模型,设计最优控制器;S5:分析并验证控制器的稳定性。本发明采用T‑S模糊方法,通过混合多个线性局部子系统来逼近非线性系统,在每项模糊规则下,对局部系统设计最优跟踪控制器,得到了良好的控制效果,提高了车辆的侧向稳定性。
Vehicle lateral stability control method based on nonlinear dynamics analysis
一种基于非线性动力学分析的车辆侧向稳定性控制方法
2023-04-04
Patent
Electronic Resource
Chinese
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion |
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