基于系统辨识的轮胎侧偏刚度二元二阶参数模型求解  

Equations of Tire Cornering Stiffness Binary Quadratic Models Based on System Identification

作　　者：刘喜东[1] 马建[1] 

机构地区：[1]长安大学

出　　处：《汽车技术》2008年第4期33-36,共4页Automobile Technology

摘　　要：以系统辨识为出发点,建立了大型客车3自由度模型,构造了前、后轮胎侧偏刚度关于侧偏角和垂直载荷的二元二阶参数模型,推导出了侧偏力和横摆力矩的三元二阶模型。运用最小二乘回归分析方法对多输入、输出系统的参数进行了递推估计,并根据试验数据对实车的轮胎侧偏刚度模型进行了求解和验证。结果表明,所使用的理论和方法具有良好的可信性和实用性。Based on system identification,this paper has set up a 3 DOF model of large-sized bus,buih a binary quadratic on the front/rear tires cornering stiffness versus side slip angle and vertical load,deduced ternary quadratic expressions regarding to side slip force and yaw moment.In the course of parameters estimate of the multi-input and multi-output system,Least-squares regression analysis method is employed to make recursive estimation on the parameters of multi-input and output system,and vehicle＇s tires cornering stiffness expressions are equated and validated based on test data. The results show that theories and methods used in this paper have good creditability and practicability.

关 键 词：轮胎 侧偏刚度 系统辨识 参数模型 

分 类 号：U463.341[机械工程—车辆工程]