列车纵向车钩力不确定性研究  

Uncertainty Study of Train Longitudinal Coupler Force

作　　者：郑雪[1] 薛齐文[1] 

机构地区：[1]大连交通大学土木与安全工程学院,辽宁大连116028

出　　处：《大连交通大学学报》2017年第1期38-44,共7页Journal of Dalian Jiaotong University

基　　金：国家自然科学基金资助项目(10802015);辽宁省自然科学基金联合基金资助项目(2015020119)

摘　　要：基于区间摄动理论,引入多参数数学简化方法构建列车制动系统模型,在已有车钩力模型的基础上,建立了列车纵向动力学的不确定性区间分析模型.针对多参数的制动系统模型,分别考虑制动控制阀特性、制动缸充气特性、制动波传播速度特性等参数的不确定性,利用所建不确定性区间分析模型,探讨纵向车钩力的区间变化范围,并给出了相关的数值算例.结果表明制动系统中相关参数变化会对最大车钩力造成不同程度的影响.其中,制动控制阀特性参数对尾车最大压钩力影响最大,制动波传播速度特性参数对其影响最小.制动缸充气速度和制动波传播速度会随着制动时间的延长而减慢,这一改变均会使最大车钩力较初始的最大车钩力变大.A train braking system was built by multi-parameter mathematic simplified method, and the train longitudinal dynamics uncertain interval model is presented by interval perturbation theory based on the used model of coupler force. This thesis respectively analyzes the brake control valve characteristic, brake cylinder inflation characteristic and brake wave propagation characteristic parameter uncertainty of train air brake system for multi-parameter mathematic simplified method, and the uncertain interval model is used to discuss the variation range of couple force and provide a relevant numerical example. The results show that relevant parameters in the brake system will affect maximum coupler force in varying degrees. The brake control valve characteristic parameter has the most important influence on tail-car maximum compress coupler force, and brake wave propagation characteristic parameter has minimum impact. The brake cylinder inflation characteristic and brake wave propagation characteristic parameter will be slower by prolonging braking time, and the whole process will make coupler force increasing.

关 键 词：多参数 纵向动力学 区间摄动理论 不确定性 

分 类 号：U270.34[机械工程—车辆工程]