高速机车防滑阀动特性仿真及测试方法研究
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TH7

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国家自然科学基金(51675499)、浙江省公益性技术应用研究计划(LGG18E050009)项目资助


Dynamic characteristics simulation and test method for the high speed locomotive antiskid valve
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    摘要:

    防滑阀为高速机车防滑制动的关键执行部位,当前缺少对其动特性的全面研究,存在仿真结果和检测结果无法统一的问题。首先,基于MATLAB/Simulink软件设计了防滑阀的物理仿真模型,获得了不同工作压力下防滑阀动特性的仿真曲线。其次,基于数据采集技术及气动控制技术研制了检测系统,实现对其动特性检测;通过获得高度拟合的仿真曲线和实验曲线,交互验证了仿真模型的正确性和检测系统的可靠性。最后,为全面分析相关参数对防滑阀动特性的影响,基于显著性分析理论和回归分析理论,在完成试验因子和动特性显著性分析的基础上,采用响应曲面法应用拟合总效果判定系数R2=0999 9、0996 7,修正判定系数R2adj=0998 5、0995 2和预测判定系数R2pre=0997 7、0992 7的量化指标评估了试验设计的合理性,为防滑阀的结构优化设计提供了合理、可行的方法。

    Abstract:

    The antiskid valve is a key part in the antiskid braking system. At present, the comprehensive research on the dynamic characteristics of antiskid valves is relatively missing. Especially, the simulation results and test results cannot be unified. Firstly, a simulation model of antiskid valve based on MATLAB/Simulink software is formulated. The simulation curve of antiskid valve dynamic characteristics is obtained. Secondly, the dynamic characteristics test of the antiskid valve is achieved according to the data acquisition technology and the pneumatic control technology. In this way, the detection of dynamic characteristics is realized. The correctness of the simulation model and the reliability of the detection system are interactively verified with the highly fitted simulation curve and experimental curve. Finally, to comprehensively analyze the influence of relevant parameters on the dynamic characteristics, the saliency analysis theory and the regression analysis theory are utilized. The response surface method is used to complete the mathematical analysis of the experimental parameters and the dynamic characteristics. Experimental results show that the effect determination coefficients R2 are 0999 9 and 0996 7, the correction determination coefficients R2adj are 0998 5 and 0995 2, and the prediction determination coefficients R2pre are 0997 7 and 0992 7. These numerical values verify the rationality of the experiment design, which provide a reasonable and feasible method for optimizing the structure of the antiskid valve.

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胡晓峰,闫富菊,郭斌,陆艺,赵静.高速机车防滑阀动特性仿真及测试方法研究[J].仪器仪表学报,2019,40(11):250-259

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  • 在线发布日期: 2022-01-08
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