基于线性二次型的受电弓最优输出跟踪器设计  

Design of the pantograph optimal tracking controller based on linear Quadratic

作　　者：陈忠华[1] 唐博[1] 时光[1] 

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：《电子测量与仪器学报》2015年第11期1647-1654,共8页Journal of Electronic Measurement and Instrumentation

基　　金：国家自然科学基金(51477071);国家自然科学基金(50977040)资助项目

摘　　要：随着电力机车运行速度的不断提高,受电弓与接触网之间的压力波动越来越严重。为了减小弓网之间的压力波动,提高电力机车运行的稳定性。针对二元受电弓与接触网简化动力学模型,从受电弓主动控制角度出发,利用最优控制理论中线性二次型控制进行分析研究。根据线性二次型性能指标中误差与控制能量最小化原理,进行最优输出跟踪器设计。通过MATLAB仿真软件对系统输出接触力进行动态仿真,并得到跟踪误差曲线。分析结果表明,最优输出跟踪器跟踪能力很强,能有效提高弓网接触压力的稳定性,改善弓网受流质量。针对弓网系统模型,线性二次型是一种有效的控制策略。With the increase of the operating speed of electric locomotive,the pressure fluctuation between pantograph and catenary is more and more serious. In order to reduce the pressure fluctuation between pantograph and catenary,and improve the stability of electric locomotive,focused on the simplified dynamic model of the binary pantograph and catenary,from the viewpoint of the active control of the pantograph,the linear quadratic control in the optimal control theory was carried out for the analysis and study. According to minimization principle between error and control energy of linear quadratic performance index,optimal tracking controller was designed. The system output contact force was dynamically simulated through MATLAB simulation software,and the tracking curve of error has been got. The analysis results show that the optimal tracking controller has the stronger tracking effect,and effectively improve the stability of the pantograph and catenary contact pressure and current collection quality. In view of the pantograph catenary system model,linear quadratic is an effective control strategy.

关 键 词：压力波动 最优控制 线性二次型 误差 跟踪器 稳定性 

分 类 号：TP273.1[自动化与计算机技术—检测技术与自动化装置]