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为了使转向架参数测试试验能够得到正确合理的数据处理结果,分析了试验台的工作原理及试验误差产生的原因。采用ActiveX技术,并利用VB和Matlab进行混合编程,开发了转向架参数测试台数据处理软件,对误差进行剔除。分析了定位刚度及回转阻力系数测试数据处理方法,总结了回转阻力系数计算结果的评判标准。最后运用此软件对CRH5转向架所做参数测试试验的数据进行处理,以验证软件的可行性。计算结果表明:各回转阻力系数均小于0.08;在作动器加载频率相同的情况下,空气弹簧失气工况比充气工况回转阻力系数值大,在空气弹簧状态相同的情况下,回转阻力系数随作动器加载频率增大而增大,因此,车辆运行速度和空气弹簧状态对车辆曲线通过性能都有影响。
In order to make the bogie parameters test to get the correct and reasonable data processing results, the working principle of the test rig and the reason of the test error are analyzed. Using ActiveX technology and VB and Matlab mixed programming, the bogie parameter test bench data processing software was developed to eliminate the error. The test data processing methods of positioning stiffness and slewing resistance coefficient are analyzed, and the evaluation criteria of slewing resistance coefficient are summarized. Finally, this software is used to process the parameters of the CRH5 bogie test data to verify the feasibility of the software. The calculation results show that the resistance coefficients of all the rotors are all less than 0.08. Under the same loading condition of the actuator, the loss of air spring is larger than that of the air-spring condition. Under the condition of the same air spring, The coefficient increases with the loading frequency of the actuator. Therefore, the running speed of the vehicle and the state of the air spring have an impact on the curve passing performance of the vehicle.