匀变速工况下汽车的转向特性仿真研究  

Simulation of Steering Characteristics of Vehicle in Case of Constant Acceleration

作　　者：周秋丽[1] 陈勇[1] 

机构地区：[1]北京信息科技大学,北京100192

出　　处：《计算机仿真》2012年第9期339-342,共4页Computer Simulation

基　　金：清华大学汽车安全与节能国家重点实验室开放基金项目资助(KF11021)

摘　　要：为了研究转向工况下的汽车操纵稳定性问题,由于受到外界环境干扰和转弯离心力的影响,为保证行驶的稳定性,需准确获得变速转向工况下的动力特性,建立汽车转向工况下匀变速运动的线性二自由度动力学模型,并从整车控制的角度出发,以横摆角速度作为判据,用仿真分析模型。为提高汽车的响应特性,进行了匀变速工况下汽车的转向仿真研究。仿真结果表明,在匀加速转向时,汽车的横摆角速度响应是逐渐增加;在匀减速转向时,汽车的横摆角速度响应逐渐减小,可为汽车在转向工况下的操纵控制提供有益的参考。In order to study handling characteristics and dynamic performance under steering conditions, a two-degree-of-freedom vehicle model was established in the case of vehicle steering in constant acceleration, and then the simulation model based on the model was built. Simulation model was carried out according to the dynamics model. Yaw rate was used as the evaluation criterion in the view of vehicle control. In order to understand response character-istics, simulation analyses were performed when the vehicle steered in constant acceleration. The simulation results show that vehicle yaw rate enhances gradually in acceleration and declines gradually in deceleration, which is helpful to control the vehicle.

关 键 词：转向动力学 仿真模型 匀变速运动 仿真分析 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]