高速受电弓的力学模型及运动微分方程_李敏.pdf

2 　 3 Vol.2　No.3 2005 6 　　　　 　 　JOURNAL OF RAILWAY S IEN EAND ENGINEERING　 　 　　　　June　2005 　, 　, 　　 (中南大学 土木建筑学院力学系, 湖南长沙410075) 　:在比较目前受电弓的计算机仿真所采用的 多力学模型之后, 针对高速受电弓的力学特点, 以DSA 系列高速受电 弓为例, 提出了一种较为合理和全面的力学模型, 充分考虑了高速受电弓的各种运动:受电弓的滑板、支架被作为平面运动 考虑, 同时考虑了两块滑板条的俯仰运动。这种力学模型比传统的力学模型更能全面地反映高速受电弓的运动特性。在 建立此力学模型的基础上, 推导了受电弓的运动微分方程, 并用实验证明了这种模型的正确性。这为高速弓网的计算机仿 真研究打下良好的基础。 :高速受电弓;力学模型;运动微分方程;计算机仿真 :U225　　　:A　　　:1672-7029(2005)03-0083-05 Mechanical models and differential equations of motionfor high speed pantographs LI Min, LI Feng-liang, MA Jun (School of Civil ngineering and Architecture, Central South University, Changsha410075, China) Abstract :The numerous mechanical models have been compared, which are used in the computer simulation about the pantographs.According to the mechanical characteristics of the high-speed pantographs and taking the DSA series pantographs, this paper puts forward a kind of more reasonable and more complete mechanical models, inwhich vari- ous motions of the high-speed pantographs have beenwell considered.For example, the skateboards and the support of pantographs can be considered as plane motions, and at the same time the bending or lifting motions of the two skateboards have been included.This kind of mechanical models can describe the motional features of high-speed pantographs more completely than the traditional ones.On the base of the mechanical models of high-speed pan- tographs, the differential equations of motion have been derived.And thiswill make solid base for the computer simu- lation of the pantographs and catenaries. Key words:high-speed pantographs;mechanical models;differential equations of motion;computer simulation 　　。 (Mathiew equition) [ 3] ,