摘要
应用达朗贝尔基本原理,建立了两轴汽车的操纵与制动全工况下的统一动力学数学模型,全面考虑了车辆纵向、横向与垂向动力学相互作用的耦合关系,通过MATLAB/Simulink对车辆在不平路面上的转弯制动工况进行了相应的仿真分析,并与水平路面上的转弯制动情况进行比较。仿真计算结果表明,该模型能够较好地同时反映车辆的纵横向和垂向运动特性,与水平路面上结果相比,在不平路面上的转弯制动时间和制动距离均有少量增加,而车辆平顺性则出现明显恶化。
Based on the basic principle of D’Alembert,the unified dynamic mathematical model of two-axle vehicles under all operating conditions of steering and braking is set up,with the coupling relationship among the vehicle longitudinal,lateral and vertical dynamics taken into consideration.With the aid of MATLAB/Simulink,the steering-braking conditions on uneven roads are simulated and analyzed,and then compared with those on flat roads.The results show that the model accurately describes the vehicle longitudinal-lateral and vertical dynamics.Both the steering-braking time and the braking distance on uneven roads,compared with those on flat roads,increase slightly,while the ride comfort deteriorates obviously.
作者
来飞
LAI Fei(Key Laboratory of Advanced Manufacturing Technology for Automobile Parts of Ministry of Education,Chongqing University of Technology,Chongqing 400054)
出处
《机械设计》
CSCD
北大核心
2020年第5期37-43,共7页
Journal of Machine Design
基金
重庆理工大学科研启动基金资助项目(2019ZD31)
重庆市教委科研资助项目。
关键词
汽车
纵横向与垂向动力学
统一模型
仿真
vehicle
longitudinal-lateral and vertical dynamics
unified model
simulation
