The whole system of railways consists of the interactive systems of track, train, pantograph and catenary.

机车与轨道、受电弓与接触网之间相互作用、相互影响，共同构成铁路大系统。

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Three typical dynamic models for catenary system and a model for pantograph frame are established. A simulation software for the simulation is developed.

建立了各类接触网的欧拉梁-集中质量模型及受电弓的框架模型，开发了其数值模拟软件。

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To register directly, deal with catenary system trouble, renew the local of trouble, ensure the security of operating locomotive, the image collection system for pantograph and catenary is designed.

为了更加直接的记录，处理弓网故障，再现故障发生现场，保障机车的运行安全，设计了弓网图像采集系统。

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The gap between the pantograph, which is the arm on top of the train car that draws power from overhead lines, and the catenary system must remain within a precise distance and tension.

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