利用VC++编写的可用于自动化计算车辆制动状态，实例中建立了车辆的2自由度模型，有效地计算车辆的制动距离，前后制动力分配。-Written by VC++ can be used for the automatic calculation of vehicle braking state, instance has established 2 degrees of freedom vehicle model, effectively calculate the braking distance