Review of pantograph active control

In order to control pantograph-catenary coupling vibration and improve the current collection quality of high-speed train,the modeling of pantograph-catenary system,the control objectives and the measurement system,the control algorithms,the actuator and its installation, and the experimental verification were reviewed in the active control of pantograph.The impact of pantograph-catenary model on the computation precision and time in contact force simulation, the advantages and disadvantages of different control algorithms and the choice methods of operating mechanism were commented.The future research directions of active control were prospected from model optimization,algorithm design,signal modification and some other aspects.Analysis result shows that in the active control of pantograph,the key factors of pantograph-catenary system and the calculation efficiency must be considered in pantographcatenary modeling,the control target should reflect current collection quality,measurement system should decrease the influence of locomotive disturbance on the reliability of measurement result,and control mechanism can not impact the work of hoisting mechanism.The critical factors that decide pantograph-catenary system to be successfully applied in actual engineering are real-time control algorithms and high-efficiency actuators.10figs,54refs.