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当考查一种控制方法或控制技术在机车牵引电动机上应用时，必须考虑轮轨之间的相互作用动力学。其中包括车轮空转／滑行的问题以及不同的轮径对牵引电动机负荷的影响。这些影响取决于牵引电动机及其控制器和轮轨粘着特性之间复杂的相互作用。本文介绍了一种可扩展用来模拟多台三相电动机驱动的机车的轮轨粘着特性的动力学模型。该模型能够显示车轮空转现象以及车轮直径的变化对牵引电动机的影响。在动力学系统模拟器“SIMULINK”中完成了对轮轨间粘着特性的模拟，并给出了几种简化条件下的模拟结果。
When examining a control method or control technique applied to locomotive traction motors, the interaction dynamics between the wheel and rail must be considered. This includes the problem of wheel idling / coasting and the effect of different wheel diameters on the traction motor load. These effects depend on the complex interaction between the traction motor and its controller and the wheel-rail adhesion characteristics. This paper presents a kinematic model that can be extended to simulate the wheel-rail adhesion characteristics of locomotives driven by multiple three-phase motors. The model can show the phenomenon of wheel idle and wheel diameter changes on the traction motor. In the simulator “SIMULINK” of dynamic system, the simulation of the adhesion characteristics between wheels and rails is completed and the simulation results under several simplified conditions are given.