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机械毕业设计 论文

资源描述：

LW01-022@交叉电缆回线型TWC系统技术研究,机械毕业设计 论文

内容简介：

交叉电缆回线型TWC系统技术研究摘要本文通过对车地通信TWC系统的分析，确定TWC系统的原理和采用的关键技术。并进一步确定相关系统技术参数，包括轨旁环线、车载天线发送信号和接收信号的频率F、环线电阻值R、电感L、电容C以及耦合单元电路元件电阻和电容的参数；制定TWC系统测试、维护技术方案，以规范TWC维护流程，方便系统维护。提出TWC系统维护建议，从而提高维护技术水平，提升系统的可靠性，减少交叉电缆回线型TWC车地通信故障。前期，对交叉电缆回线型TWC系统进行技术分析，初步了解其所采用的关键技术、信息传输流程和系统实现原理。收集交叉电缆回线型TWC故障及发生问题的记录，对其进行分类、归纳、分析。选择典型车站测试TWC系统参数值，包括环线的几何值和电路参数。选择典型列车，对车载系统（天线）测量，包括物理参数。对现场检测到的数据，根据电磁感应原理、谐振电路理论、传输线理论进行分析。其次，搭建实验室模拟环境进行实验，铺设190米长的轨旁环线，设计制作检测车，模拟现场环境进行测试、实验。对模拟环境实验数据进行总结分析，得到参数和结论，并用于解释现场出现的问题和现象。将研究的结果，返回现场进行实验，验证其合理性。修正研究结果和参数。最后，通过分析系统采用的关键技术，编制行之有效的维护方案。关键词：车地通信，程序停车，连续传输模式，耦合单元RESEARCH OF TECHNOLOGY FOR CROSSOVER-STYLE TWC SYSTEMABSTRACTThrough the analysis of train-wayside communication TWC system in this article, determine the principles and key technologies of TWC systems. To further identify relevant system parameters, including wayside loop, carborne antennas send signals and receive signal of frequency, loop resistance, inductance, capacity C, resistance and capacitance of coupling unit and component parameters. Establish TWC systems test and maintenance project in order to standardize TWC maintenance procedure and convenient for system maintenance. This study make the suggestion of TWC system maintenance, thereby improve the level of maintenance technology, step up system reliability, reduce crossover loop style TWC communication fault. Prophase, technical analyze on the crossover cable line style back to TWC system, understand the key technology, information transfer process and system implement principle. Collect the record of crossover cable line style back to TWC faults and occurred issues, then classify, sum up, analyze. Select typical station test TWC system parameter values, including link geometry values and circuit parameters. Select a typical train, measure on-vehicle system (antenna) including physical parameters. Analyze data which is detected on scene according to electromagnetic induction principle, resonant circuits theory and transmission line theory. Second, build a lab, do simulation environment test which lay 190 meters of track link, design inspection car, simulate live environment. Aim at experiment data, make a summary analysis, calculate parameter and make a conclusion. To validate the study result rationality, return scene and re-test. Correct the study results and parameters. Finally, draw up an effective plan for maintenance according to the key technology analysis system used.LuXinYuan(Con