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一、引言测量车轮与路面的摩擦系数φ(以下简称φ值)的方法很多,但目前最为广泛采用的是摩擦系数测量车,这是因为它具有安全、准确、方便等一系列优点,深受公路及
I. INTRODUCTION There are many ways to measure the friction coefficient φ (hereinafter referred to as the φ value) between the wheel and the road surface. However, the friction coefficient measuring car is the most widely used one at present due to its advantages of safety, accuracy and convenience. Highway and