计及接触线脉动风激励的受电弓主动控制研究  

Active Control of Pantograph with Fluctuating Wind Excitation of Contact Wire Considered

作　　者：王英 焦玉伟 陈小强[1] WANG Ying;JIAO Yuwei;CHEN Xiaoqiang(School of Automation&Electrical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China)

机构地区：[1]兰州交通大学自动化与电气工程学院,兰州730070

出　　处：《机械科学与技术》2021年第8期1149-1157,共9页Mechanical Science and Technology for Aerospace Engineering

基　　金：中国铁路总公司重点研发项目(2017J012-A);国家自然科学基金项目(51767013,51867012);甘肃省科技厅自然科学基金项目(18JR3RA111)。

摘　　要：针对外部环境脉动风激励对弓网耦合系统动态耦合性能造成的影响,提出了一种受电弓变论域模糊分数阶PID主动控制方法。修正了脉动风激励下的简化弓网模型,分析了脉动风激励在接触线产生的抖振力,得到了不同风攻角和风速下的弓网系统接触压力。将接触压力误差及误差变化率作为变论域模糊分数阶PID控制的输入,实时调整PID参数。利用论域伸缩因子调整模糊控制论域,提高了模糊控制精确性。利用Oustafod滤波器有理化了分数阶微积分算子,提高了PID控制器灵活性。仿真结果表明,设计的控制器在脉动风环境下能有效减小接触压力波动,降低弓网离线率,提高了系统的鲁棒性。To deal with the influence of the fluctuating wind excitation of the external environment on the dynamic coupling performance of a pantograph-catenary system,a variable universe fuzzy fractional-order PID active pantograph control method was proposed.The simplified pantograph-catenary model under fluctuating wind excitation was modified.The buffeting force generated by the fluctuating wind excitation of the contact wire was analyzed,and the contact force of the pantograph-catenary system under different wind attack angles and wind speed was obtained.The contact force error and the error change rate are used as inputs of the variable universe fuzzy fractional PID control,and the PID parameters are adjusted in real time.The fuzzy control variable-universe is adjusted with the contraction-expansion factor,improving the accuracy of the fuzzy control.The fractional calculus operator is rationalized with the Oustaloup filter to improve the flexibility of the PID controller.The simulation results show that the designed controller can effectively reduce the fluctuation of contact force under the wind environment and the off-line rate,thus improving the robustness of the pantograph-catenary system.

关 键 词：受电弓 主动控制 接触线脉动风激励 变论域模糊控制 分数阶PID 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]