基于LQR的高速受电弓最优半主动控制研究  

Semi-active Control for High-speed Pantograph Based on the Optimal LQR Regulator

作　　者：杨岗[1] 李芾[1] 

机构地区：[1]西南交通大学机械工程学院,四川成都610031

出　　处：《铁道学报》2011年第11期34-40,共7页Journal of the China Railway Society

基　　金：国家科技支撑计划(2007BAG05B00);中央高校基本科研业务费专项资金资助(SWJTU09ZT07;SWJTU11BR019)

摘　　要：论述受电弓控制类型及特点,探讨改善弓网动态性能的主要措施;建立受电弓最优主动控制和最优半主动控制模型;利用simulink仿真手段,对被动控制、最优主动控制、最优半主动控制下的弓网动态性能进行研究,进而依据相关评价体系分析最优主动控制和半主动控制策略对弓网动态特性和受流质量的影响。研究表明,受电弓的主动与半主动控制可有效改善弓网振动性能,而半主动控制具有所需外界能量少、控制过程无条件稳定、控制效果与主动控制接近等特点,将成为新型受电弓的主要研究方向。The control types and characteristics of the pantograph and the main measures to improve the dynamic performance of the pantograph-catenary system are discussed.The active control model and semi-control model based on the optimal LQR regulator of the pantograph are established.Simulation study of dynamic performance of the pantograph-catenary system under the passive control,optimal active control and optimal semi-active control are made with Software simulink.On the basis of established control models and simulation,the influence of the optimal active control and semi-active control on the dynamic performance and quality of current collection of the pantograph-catenary system is analyzed.The research results show that the performance of the pantograph-catenary system can be improved obviously with active and semi-active control,and because of the features of unconditional stability and better effect close to active control and the feature with little need for external energy,semi-active control will be the direction of study of the new type of pantographs.

关 键 词：受电弓 最优控制 半主动控制 仿真分析 受流质量 不均匀系数 

分 类 号：U264.3[机械工程—车辆工程]