摘要
[目的]台架试验是研究高速动车组轴箱轴承性能的主要技术手段,而准确模拟轴箱轴承的实际运行载荷工况是获取真实、可靠的轴箱轴承性能数据的必要前提。合理设计轴箱轴承试验台,以模拟轴箱轴承高速重载的运转工况;设计径向加载机构和轴向加载机构控制策略,以满足加载系统控制精度和响应速度的要求。[方法]设计了一套高速动车组轴箱轴承可靠性试验台电液伺服动态加载系统。介绍了该系统中轴向加载系统和径向加载系统的结构组成及工作原理,并提出了一种模糊PID(比例-积分-微分)控制算法。搭建轴箱轴承可靠性分析试验台,进行加载性能测试和轴箱轴承可靠性测试试验,用以验证动态加载系统的合理性。[结果及结论]所设计的电液伺服动态加载系统能够满足轴箱轴承可靠性试验的加载要求;轴向加载响应时间为0.276 s,轴向加载稳态误差为0.339 kN,径向加载稳态误差为1.742 kN,满足EN 12082:2017标准要求。
[Objective]Bench test is a primary technical means for studying the performance of high-speed EMU(electric multiple units)axle box bearings.Accurately simulating the practical operational load conditions of axle box bearings is essential for obtaining authentic and reliable performance data.A test bench for axle box bearings is reasonably designed to simulate the high-speed,heavy-load operational conditions.Control strategies for radial and axial loading mechanisms are developed to meet the requirements for control precision and response speed of the loading system.[Method]A dynamic loading system with electro-hydraulic servo is designed for the high-speed EMU axle box bearing reliability test bench.The structural composition and working principles of the axial and radial loading systems within this setup are introduced and a fuzzy-PID(proportional-integral-derivative)control algorithm is proposed.The axle box bearing reliability analysis test bench is constructed to conduct loading performance tests and axle box bearing reliability testing,thereby validating the rationality of the dynamic loading system.[Result&Conclusion]Test results indicate that the designed electro-hydraulic servo dynamic loading system meets the loading requirements for axle box bearing reliability test.The axial loading response time is 0.276 s,the axial loading steady-state error is 0.339 kN,and the radial loading steady-state error is 1.742 kN,all of which satisfy requirements specified in the EN 12082:2017 standards.
作者
杜洪军
梁娜
郑晓波
刘冠男
卢秉正
DU Hongjun;LIANG Na;ZHENG Xiaobo;LIU Guannan;LU Bingzheng(CRRC Changchun Railway Vehicles Co.,Ltd.,130062,Changchun,China;Safety Evaluation Research Institute,Safety Technology Center,National Railway Administration of the People′s Republic of China,100891,Beijing,China;China State Railway Group Co.,Ltd.,100844,Beijing,China)
出处
《城市轨道交通研究》
北大核心
2024年第8期299-303,共5页
Urban Mass Transit
基金
中车长春轨道客车股份有限公司科技开发项目(2022JC0102)。
关键词
高速动车组
轴箱轴承
可靠性试验台
动态加载系统
high-speed EMU
axle box bearing
reliability test bench
dynamic loading system
