摘要：轨道电路是铁路信号自动控制的基础设备。轨道电路的传输性能在很大程度上取决于钢轨线路的电气特性。钢轨线路的特性是由它的一次参数和二次参数决定的。对轨道电路进行仿真可以更加直观地体现了轨道电路一次参数、二次参数与传输信号之间的关系。在对轨道电路进行仿真的情况下，利用各项参数，建立轨道电路参数模型和电容补偿式轨道电路。可以通过修改参数来了解各项参数对轨道电路输出电压的影响。仿真得到的数据可以作为轨道电路参数测量、调整的参考依据，便于日常的文护检修。本文运用MATLAB对轨道电路的一次参数频率特性、轨道电路的二次参数频率特性、轨道电路的移频特性进行仿真。利用MATLAB程序建立轨道电路参数模型。模拟不同状态下的轨道电路的相关参数, 对仿真结果进行分析。而电容补偿式轨道电路模型可以仿真轨道电路在调整状态和分路状态时的参数变化。研究轨道电路的MATLAB仿真在现实应用中起到重要作用，为轨道电路的设计和改进提供依据。
关键词： 一次参数；二次参数；轨道电路参数模型 4320
The Track Circuit Simulation and Application of MATLAB
Abstract：Track circuit is the basis for automatic control of railway signaling equipment. Track circuit transmission line performance depends on the electrical characteristics of rails. Rail line characteristic is determined by its primary parameters and the second parameters. Track circuit simulation can explain the relationship between primary parameters, the second parameters and the transmission signal. In the simulation model, you can modify the parameters to understand the various parameters on the track circuit output voltage. Simulation data obtained can be used as track circuit parameter measurement and adjustment of reference, which is conducive to routine maintenance overhaul. In this paper, a track circuit model is established to analyzing the frequency characteristics of the track circuit, including the primary parameters, the secondary parameters and the frequency shift track circuit characteristic based on MATLAB. The simulation results of different track circuit parameters were analyzed. The simulation model for track circuit with compensating capacitors is also exploited to analyze the circuit output currency and voltage under adjustment and shunt status. The MATLAB simulation of track circuits can provide a theoretical basis for its design and improvement and plays important roles in its future applications.
Key Words： primary parameter； secondary parameters； track circuit parameter model

目录
1绪论 1
1.1 前言 1
1.2  国内外轨道电路现状 1
1.3  发展趋势 2
1.4 课题研究的目的与意义 2
2轨道电路仿真理论 4
2.1 轨道电路原理 4
2.2 国产轨道电路 4
2.2.1国产8信息移频自动闭塞 4
2.2.2 UM-71型移频轨道电路 5
2.2.3 ZPW-2000A型移频轨道电路 5
2.3 MATLAB简介 7
2.4 轨道电路仿真目标 8
3轨道电路仿真 10
3.1 轨道电路一次参数 10
3.1.1 一次参数理论 10
3.1.2 一次参数仿真结果 11
3.2 轨道电路二次参数 15
3.2.1 二次参数理论 15
3.2.2 二次参数仿真结果 15
3.3 轨道电路移频特性 18
3.3.1  移频特性理论 18
3.3.2移频特性仿真结果 19
3.4 轨道电路参数模型 20
3.4.1轨道电路参数模型仿真理论 20
3.4.2 轨道电路参数模型仿真结果 22
3.5 电容补偿式轨道电路仿真模型 26
3.5.1 电容补偿式轨道电路仿真模型理论 26
3.5.2 电容补偿式轨道电路仿真 29 轨道电路MATLAB仿真及应用+源码:http://www.751com.cn/tongxin/lunwen_952.html