汽车行驶阻力模型参数的确定  

Determination of Parameters in Vehicle Driving Resistance Model

作　　者：李晓甫[1] 赵克刚[1] 黄向东[1,2] 魏建军 

机构地区：[1]华南理工大学机械与汽车工程学院,广州510640 [2]广州汽车集团股份有限公司汽车工程研究院,广州510640

出　　处：《汽车工程》2011年第8期645-648,共4页Automotive Engineering

基　　金：国家自然科学基金项目(50805049)资助

摘　　要：在分析汽车行驶阻力特性后,结合仿真分析与试验设置等具体应用需要,建立起含有3个未知系数的行驶阻力模型。基于非线性最小二乘法拟合原理,应用数值计算方法求解微分方程,并进行优化迭代;充分利用汽车滑行过程数据记录中的丰富信息,快速有效地求解出汽车的行驶阻力模型。After analyzing the feature of vehicle driving resistance,combined with the specific application needs such as simulation analysis and test settings,a driving resistance model with three unknown coefficients is set up.Based on the theory of nonlinear least squares fitting,the differential equations are solved using numerical method with optimization iteration conducted.Taking full use of abundant information contained in the data recorded during vehicle coast down test,the vehicle driving resistance model is solved.

关 键 词：汽车 行驶阻力 数值计算 非线性拟合 

分 类 号：U461.1[机械工程—车辆工程]