商用车简化模型参数辨识方法  

Parameters identification for simplified model of commercial vehicles

作　　者：宗长富[1] 聂枝根[1] 王化吉[1] 

机构地区：[1]吉林大学汽车仿真与控制国家重点实验室,长春130022

出　　处：《吉林大学学报（工学版）》2013年第5期1171-1177,共7页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(51075176)

摘　　要：为了准确表征车辆动态特性,在建立了简化商用车稳定性模型的基础上,利用Truck-sim数据并运用最小二乘法与遗传算法结合的方法对模型关键参数进行了辨识。利用辨识后的关键参数形成的MAP图,进行了模型动态工况仿真研究。仿真结果与Trucksim数据对比结果表明:利用此方法辨识出的关键参数MAP图能够满足商用车简化模型表征车辆实际状态的要求,为车辆稳定性控制奠定了基础。In order to accurately characterize the dynamic performance of vehicles, a simplified model of commercial vehicles is established and the key parameters of this model are identified by means of the combination of least square algorithm and genetic algorithm and using Trucksim data. Simulation of the dynamic working condition of the model is carried out using the MAP of the identified key parameters. The simulation result is compared with the Trucksim data, which indicates that the MAP of the identified key parameters can satisfy the need to characterize the actual state of vehicle using the simplified model and lays a foundation for vehicle stability control.

关 键 词：车辆工程 商用车动力学模型 参数辨识 最小二乘法 遗传算法 

分 类 号：U461.4[机械工程—车辆工程]