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1 检测汽车侧滑量的必要性及意义为了使汽车运行时操作稳定,转向轻便,在汽车制造时已对转向车轮设计了定位,使车轮在静态安装的状态下有确定的几何角度和尺寸数值。在汽车的使用过程中,由于转向机构、车轴、车架的变形、磨损和松动,使原确定的几何角度和尺寸发生变化,导致车轮定位失常。这样,一方面造成转向沉重、操纵失准,并潜伏着行车事故的危险(据西方一些国家的统计资料表明,发生人身伤亡的交通事故中,在潮湿路面上约有1/3与侧滑有关,在冰雪路面上则有70%～80%与
1 the necessity and significance of the detection of the amount of car side slip In order to make the car running stable operation, steering light, the car has been designed on the steering wheel positioning so that the wheel in the static state of the installation has a certain geometric angle and size values . In the process of using the car, due to the steering mechanism, axle, frame deformation, wear and loose, so that the original geometry and size of the determined changes, resulting in wheel alignment disorders. In this way, on the one hand, it causes heavy steering, misalignment and potential danger of traffic accidents (according to the statistics of some western countries, about one third of traffic accidents on wet roads are related to skids in traffic accidents causing personal injury and death , In the ice and snow there are 70% ~ 80% with