在研制制动试验台的过程中,轮胎和支承部件(滚筒和跑板)之间的附着系数及其变化规律是大家关心的问题。为了使台试能够模拟路试,进而取代路试,首先要对路试制动时的附着系数变化的规律有所了解。而制动减速度又是和附着系数直接有关系的,我国目前不少地方还是通过路试制动,测定其减速度来确定路面的附着系数,所以我们把这两者一起来讨论。 In the process of developing a brake test stand, the adhesion coefficient between the tire and the support member (the drum and the running board) and its variation are issues of concern. In order to make the bench test to simulate the road test, and then replace the road test, we must first understand the law of the adhesion coefficient changes during road test braking. The brake deceleration and the adhesion coefficient is directly related to many places in our country through the road test braking, measuring the deceleration to determine the road adhesion coefficient, so we put these two together to discuss.