摘要
横摆角速度和质心侧偏角是描述汽车稳定性的两个重要指标,汽车在高速行驶时,驾驶员紧急转向会导致车辆失去控制,很容易造成侧滑乃至翻车等严重交通事故,因此有必要对汽车操纵稳定性进行分析。本文建立了汽车线性二自由度系统的数学模型,应用仿真分析软件Matlab/sinulink,以前轮转角为输入,对系统进行时域分析。比较不同车速、不同前轮转角和不同轮胎侧偏刚度下的稳态响应曲线,分析汽车横摆角速度和质心侧偏角对汽车操纵稳定性的影响。若汽车选用侧偏刚度的轮胎,在较低的车速和较小的前轮转角下行驶,是较为安全的。
Vehicle yaw rate and sideslip angle are the important indexes of describing vehicle stability. When the car is driving at high speed, the driver＇s emergency steering will lead to losing control of the vehicle. It is easy to cause serious traffic accidents of the sliding and overturning. Therefore, it is necessary to analyze the automobile handling stability. The paper established the car linear mathematical model of two degrees of freedom system by applying the simulation analysis software Matlab/simulink. The front wheel angle was treated as the input, and the time domain method was used to analyze the system. The steady state response curves under different speed, different angle, and different tire lateral stiffness were compared and the influences of automobile yawing angular velocity and sideslip angle on the vehicle handling stability were analyzed. If choose cornering stiffness bigger tires, driving is relatively safe at lower speed and smaller Angle.
出处
《森林工程》
2016年第1期64-67,76,共5页
Forest Engineering
基金
黑龙江省留学归国人员科学基金(LC2015019)
