为从根本上解决轮胎参数变化影响估计精度的问题，文中不引入轮胎模型，提出了一种基于功能原理和模糊控制的路面附着系数估计算法． 首先利用功能原理推算当前车辆状态下的利用附着系数，再通过模糊推理的方法由当前状态下的利用附着系数和滑移率推算当前行驶路面的峰值附着系数，然后利用Matalb 软件建立车辆的三自由度模型，对估计算法进行了仿真分析． 结果表明，文中算法能有效地估计路面附着系数，具有良好的实时性和准确性．

In order to avoid the effects of tire parameters on estimation accuracy,the tire models are not introduced in this paper.On this basis,a road adhesion coefficient estimation algorithm combining the work-energy principle and the fuzzy logic control is proposed.First,the utilized adhesion coefficient under current vehicle state is estimated on the basis of the work-energy principle.Then,by using a fuzzy logic controller,the maximum adhesion coefficient of current road is estimated according to both the utilized adhesion coefficient and the slip ratio under the current state.Finally,by employing the Matlab software,a vehicle model of three degrees of freedom is constructed to analyze the proposed algorithm by simulations.The results show that the proposed algorithm can effectively estimate the road adhesion coefficient,and has good real-time and accuracy.