摘要
为获得弓网系统动态接触压力的变化规律、实现弓网接触压力的最优控制,开展了大量的弓网接触压力特性实验,应用数理统计的方法分析了弓网接触压力的统计特性.研究结果表明:弓网系统的动态接触压力呈周期性波动变化,并且符合正态分布.动态接触压力的波动范围为平均接触压力加减三倍标准差,该波动范围随着运行速度的增加而增大.弓网系统的振动频率与运行速度和静态接触压力有关.
In order to obtain the change rule and achieve optimal control of dynamic contact force in pantograph-catenary system, lots of contact force experiments were carried out. The statistical characteristics of contact force were analyzed by using mathematical statistics method. The dynamic contact force is periodic fluctuation and it is in accord with normal distribution. The dynamic contact force fluctuates between average contact force add three times the standard deviation and average contact force subtract three times the standard deviation. The fluctuation range increases with the increase of running speed. The vibration frequency of pantograph-catenary system depends on running speed and static contact force.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2017年第6期640-644,共5页
Journal of Liaoning Technical University (Natural Science)
基金
国家自然科学基金(51277090)
辽宁省教育厅重点实验室基础研究项目(LZ2014024)
第五批生产技术问题创新研究基金项目(20160054T)
关键词
接触压力
正态分布
平均接触压力
振动频率
滑动电接触
contact force
normal distribution
average contact force
vibration frequency
sliding electrical contact
