机车车辆动力性能的动态模拟

对实物试验、计算机仿真和混合模拟为基本形式的动态模拟技术进行分析，并列举各种动态模拟技术在铁路机车车辆研制过程中的应用。提出用滚轮代替钢轨，利用滚轮的上下和左右运动模拟轨道不平顺，采用滚轮差速模拟曲线，从而实现机车车辆运行的动态模拟。根据轨道不平顺的定义，给出线路状态和试验台滚轮的关系，给出机车车辆运行动态模拟试验台的设计方案。对西南交通大学牵引动力国家重点实验室的机车车辆整车滚动振动试验台的结构和功能进行系统介绍。根据机车车辆动力学性能——运动稳定性、运行平稳性和曲线通过性能的台架试验方法，通过台架试验和线路运行的理论分析，得到相应的试验误差，验证了机车车辆台架试验的可行性和合理性。

DYNAMIC SIMULATION ON DYNAMIC CHARACTERISTICS OF RAILWAY VEHICLE

The basic dynamic simulation techniques such as full-scale test, computer simulation and hybrid simulation are analyzed, and their application in the development of railway vehicles is enumerated. By sing rollers instead of rails, the track irregularity is simulated via roller motion in vertical and lateral direction, and the track curve is simulated via the different rotation of rollers. Therefore the railway vehicle running simulation is achieved by using roller test rig, The difference and relationship between rail and roller of test rig are given, and the design scheme of the roller rig is put forward according to the definition of the track irregularity. The structure and function of the railway vehicle testing roller rig, which locates in Traction Power State Key Laboratory of Southwest Jiaotong University, are introduced. Based upon the railway vehicle test method using roller rig for hunting stability, running response and curve negotiation, the test errors between railway vehicle on roller rig and on track are obtained via theory analysis. The feasibility and rationality of the railway vehicle test using roller rig are validated.