基于有限元与传输线的JTC和TCR信号传输过程的建模与仿真  

Modeling and Simulation of Information Transmission Process from JTC to TCR Based on the Finite Element Method and Transmission Line Theory

作　　者：赵林海[1] 石卫师[1] 

机构地区：[1]北京交通大学电子信息工程学院,北京100044

出　　处：《铁道学报》2013年第8期63-69,共7页Journal of the China Railway Society

基　　金：铁道部科技研究发展计划(2011X021-C)

摘　　要：本文针对有限元和传输线理论各自的特点,提出一种将传输线与有限元相结合的JTC(Jointless TrackCircuit)和TCR(Track Circuit Reader)信号传输过程的建模仿真方法。该方法利用有限元分别建立轨道电路和TCR天线模型,以此确定JTC对TCR天线的有效作用范围。在其有效范围内利用有限元对JTC和TCR天线间的电磁感应过程进行建模,而在有效范围外由传输线负责对JTC信号在钢轨中的传输过程进行建模。采用此联合建模策略实现对JTC和TCR间信息传输过程的仿真。实验表明,该方法具有建模准确、仿真精度较高、计算时间较短等优点。Utilizing at the respective characteristics of the finite element method and transmission line theory, this paper proposed a method of modeling and simulating the information transmission process from JTC to TCR based on the combined finite element method and transmission line theory. Firstly, the finite element method was used to build the models of JTC and TCR respectively and delimit the effective JTC-to-TCR action range. And then the joint modeling strategy was employed to model the electromagnetic induction process between JTC and TCR in the effeetive JTC-to-TCR action range with the finite element method and to model the transmission process of JTC signal currents by the transmission line theory out of the effective JTC- to-TCR action range, thus achieving simulation of the information transmission process from JTC to TCR. Experiments indicate that the proposed method is accurate in modeling and simulation and its computa- tion time is short.

关 键 词：无绝缘轨道电路 轨道电路读取器 有限元 传输线 建模 高速铁路 

分 类 号：TP391[自动化与计算机技术—计算机应用技术] U284.2[自动化与计算机技术—计算机科学与技术]