引入悬架K&C参数二自由度模型的建立及验证  

Establishment and Validation of a Two-degree-of-freedom Model for Suspension K&C Parameters

作　　者：朱梦 徐济慈[1] 何海[1] ZHU Meng;XU Jici;HE Hai

机构地区：[1]泛亚汽车技术中心有限公司,上海201208

出　　处：《上海汽车》2023年第9期27-32,37,共7页Shanghai Auto

摘　　要：横摆角速度是影响操纵稳定性的重要因素。在汽车行驶过程中,给其施加角阶跃输入,分析横摆角速度响应是评价汽车操纵稳定性的重要方法。文章简化汽车模型,利用牛顿第二定律建立经典二自由度线性模型及引入K&C参数的数学模型。输入整车参数、K&C试验参数,将两模型MATLAB横摆角速度响应结果与Carsim仿真结果进行对比,验证模型的可靠性,可利用二自由度模型快速获取车辆操纵稳定性的大致情况。The yaw rate is a crucial factor that affects the stability of vehicle handling.Ana⁃lyzing the response of yaw rate when a step angle input is applied during the vehicle's running is an essential method for evaluating the stability of vehicle handling.The vehicle model is simplified and a classical two-degree-of-freedom linear model and a mathematical model that introduces K&C pa⁃rameters using Newton's Second Law is established.By inputting the parameters of the real vehicle and K&C test parameters,the yaw rate response results of the two models in MATLAB are compared with the simulation results in Carsim to verify the reliability of the model.The two-degree-of-freedom model can be used to quickly obtain an approximate understanding of the vehicle's handling stability.

关 键 词：悬架K&C试验 二自由度线性模型 不足转向度 汽车操纵稳定性 横摆角速度 

分 类 号：U463.33[机械工程—车辆工程]