基于两级气压伺服系统的高速受电弓主动控制研究

针对弹性链型悬挂接触网利用有限元法建立接触网模型,采用多体动力学建立受电弓模型,通过接触力元将接触网和受电弓进行耦合建立弓网耦合模型.然后建立气压伺服系统数学模型,根据车速信号采用比例控制策略控制升弓气囊提供弓网静态接触压力,根据采集得到的动态接触力信号采用模糊控制策略控制空气弹簧提供动态接触压力的补偿力.作动器分别作用于下臂杆和弓头悬挂,通过底架上的低频调节和弓头上的高频调节两级方式,主动控制接触压力,实现高速受电弓的稳定受流.

High-speed pantograph active control strategy based on two pneumatic servo system

For flexible chain suspension catenary,the catenary model is established using finite element method,the pantograph model is established by multi-body dynamics,then the coupling dynamics model of pantograph/catenary system is established through the contract force element.Pneumatic servo system is created using mathematical methods.According to the speed signal the static contact pressure is provided by controlling balloon using proportional control strategy.Air spring that is controlled using fuzzy control strategy according to the dynamic contract force signals provides compensation force for the dynamic contact pressure force.Actuators are installed in the under arm and bow head,the contact pressure was actively controlled by two ways including low-frequency and high-frequency In order to achieve a stable high-speed pantograph current collection.