基于凯恩方法的汽车悬架实时仿真模型  

A Real-time Simulation Model for Automotive Suspension Based on Kane’s Method

作　　者：管欣[1] 张素民[1] 詹军[1] 

机构地区：[1]吉林大学汽车动态模拟国家重点实验室

出　　处：《汽车工程》2010年第8期649-653,共5页Automotive Engineering

基　　金：国家“863”高科技项目(2006AA110102);吉林省科技厅重点项目(20086006)资助

摘　　要：提出了一种用于汽车动力学实时仿真的悬架建模方法。将悬架系统模型建成为连接车身和车轮的无质量复合铰，并基于凯恩方法推导了悬架复合铰的运动方程。在满足动力学实时仿真要求的同时不降低悬架系统的运动学精度。利用该方法建立了某轿车面向结构的麦弗逊式前悬架模型，并集成到由符号计算软件产生的该轿车的多体动力学模型中。仿真与实车道路试验结果的对比表明该悬架模型具有较高的仿真精度。A suspension modeling method for real-time vehicle dynamics simulation is proposed. Specifically, the suspension system is modeled as massless composite joint connecting car body and wheels, and the kinematic equations of the joint are derived based on Kane＇s method. The equations meet the requirements of real-time dynamics simulation without degrading the kinematic accuracy of suspension system. Based on the method, a structure-oriented model for the MacPherson strut front suspension of a car is built and then integrated into a muhibody dynamics model for the car, created by .symbolic computation software. The comparisons between the results of simulation and that of real vehicle field tests show that the model has relatively high simulation accuracy.

关 键 词：悬架模型 凯恩方法 复合铰 符号计算 实时仿真 

分 类 号：U463.33[机械工程—车辆工程]