基于模糊反演法的参数不确定弓网接触载荷控制  

Control of pantograph-catenary contact load with parameter uncertainties based on fuzzy backstepping

作　　者：时光[1] 陈忠华[1] 郭凤仪[1] 刘健辰[1] 赵春雨[1] Shi Guang Chen Zhonghua Guo Fengyi Liu Jianchen Zhao Chunyu(Faculty of Electrical and Control Engineering, Liaoning Technical University, Huludao 125105, China)

机构地区：[1]辽宁工程技术大学电气与控制工程学院,葫芦岛125105

出　　处：《仪器仪表学报》2017年第2期471-479,共9页Chinese Journal of Scientific Instrument

基　　金：国家自然科学基金(51277090;51477071);辽宁工程技术大学生产技术问题创新研究基金(20160068T)项目资助

摘　　要：弓网系统具有复杂的电气、机械耦合特性,提高弓网受流性能是目前高速铁路系统亟待解决的关键问题,而弓网主动控制则是稳定弓网接触载荷、改善其受流质量的重要措施。从控制理论的角度出发,针对弓网系统存在风载荷与参数不确定性的问题,提出了基于模糊系统的弓网接触载荷反演精确控制方法。具体而言,采用虚拟控制律,逐步反演递推选择Lyapunov函数,设计模糊系统逼近不确定性与虚拟控制律微分,并进行相应的稳定性分析。仿真与实验结果表明,所提出的模糊反演控制策略能减弱弓网不确定性的影响,且能有效抑制弓网接触载荷的波动,并改善其受流质量。Pantograph-catenary system has complex coupling property of electric and machinery.Improving the current collection performance of the pantograph-catenary is a critical issue for the present high speed train system.The pantograph active control is an important mean to stabilize the contact load and improve the current collection for the pantograph-catenary.From the control theory point of view,this paper proposes a backstepping precise control method for pantograph-catennary contact load based on fuzzy system,considered the influence of wind load and parameters uncertainty.Specifically,virtual control laws are utilized to select appropriate Lyapunov function with step-by-step backstepping approach.And the fuzzy interfere systems are designed to approximate the uncertainty and differential of virtual control laws,in which the relevant stability analysis is provided.Simulation and experimental results show that the proposed method can decrease the effects of uncertainty,and greatly restrain the contact load fluctuations of pantograph-catenary,and improve the current collection performance.

关 键 词：弓网系统 接触载荷 反演 模糊系统 

分 类 号：TH823[机械工程—仪器科学与技术] TP273[机械工程—精密仪器及机械]