一、问题的提出汽车的转向是靠改变转向轮与车体间相对位置的方法来实现的。当汽车在水平路面上作稳定转向时,为了使转向时各车轮在地面上都作纯滚动而不发生侧滑,以减小轮胎的磨损和地面的阻力,应使各车轮同时绕一公共轴线在地面上做圆周运动,并且过各车 First, the question raised Car steering by changing the steering wheel and the relative position between the body to achieve. When the car makes a steady turn on a horizontal road surface, in order to make the wheels rotate on the ground during the steering, pure rolling without side slip, so as to reduce the wear of the tire and the resistance of the ground, so that the wheels can rotate around a common axis Do circular motion on the ground and pass each car