摘要
电气化铁路受电弓与接触网(弓网)系统的载流摩擦性能是影响列车受流和受电弓滑板磨损的关键因素。该文利用销盘式高速载流摩擦磨损实验机,以浸金属碳磨销与纯铜盘为摩擦副,获得与压力载荷、滑动速度、电流密度相关的摩擦力特性规律。摩擦力随着压力载荷的增加而增大,随着电流密度的增加而减小,随着滑动速度的增加而增大。并且随着压力载荷的增加,摩擦力的增大幅度逐渐变缓。在此基础上,采用支持向量机建立弓网系统下与压力载荷、滑动速度、电流密度相关的摩擦力回归模型,采用遗传算法进行参数优化。利用实验数据,验证模型的有效性,为今后弓网系统摩擦力的进一步研究提供参考。
The friction performance with current of the pantograph-catenary system of electrified railway is the key factor that affects the train current-carrying and the wear of pantograph slide.In this paper,the pin-on-disc high-speed current-carrying friction and wear experimental machine,with copperimpregnated carbon grinding pin and pure copper disc as friction pair,was used to obtain friction characteristics related to pressure load,sliding velocity and current density.The friction increases with the increase of the pressure load,decreases with the increase of the current density,and increases with the increase of the sliding speed.And with the increase of the pressure,the friction increases amplitude is slow.On the basis,the friction regression model was established by using support vector machine(SVM),which was related to pressure load,sliding speed and current density with the pantograph-catenary system.Genetic algorithm was used to optimize the parameters.The validity of the model is verified by the experimental data,which provides a reference for further research on the friction of pantograph-catenary system.
作者
郭凤仪
陈明阳
陈忠华
时光
回立川
Guo Fengyi;Chen Mingyang;Chen Zhonghua;Shi Guang;Hui Lichuan(Faculty of Electrical and Control Engineering Liaoning Technical University,Huludao 125105,China)
出处
《电工技术学报》
EI
CSCD
北大核心
2018年第13期2982-2990,共9页
Transactions of China Electrotechnical Society
基金
国家自然科学基金资助项目(51477071)
关键词
弓网系统
载流摩擦
摩擦力
支持向量机
回归模型
Pantograph-catenary system
current carrying friction
friction
support vector machine
regression model
