考虑列车运行速度的应答器传输系统可靠性评估.docVIP

考虑列车运行速度的应答器传输系统可靠性评估 李正交 蔡伯根 戴胜华 陆德彪 刘江 北京交通大学电子信息工程学院 X 关注成功！ 加关注后您将方便地在 我的关注中得到本文献的被引频次变化的通知！ 新浪微博 腾讯微博 人人网 开心网 豆瓣网 网易微博 摘????要： 为定量评估应答器传输系统的可靠性, 分析列车运行速度对系统可靠性评估的影响, 提出基于马尔可夫过程的可靠性评估方法。将应答器传输模块BTM报文层不能正确译码的概率作为系统可靠性评估的指标, 采用鱼骨图法将影响系统可靠性评估的因素分为动态因素与静态因素, 分析列车运行速度对BTM接收报文比特数及误比特率的影响, 并对可靠性评估方法进行仿真验证。结果表明:列车运行速度主要通过影响BTM接收报文比特数来影响系统的可靠性;当BTM接收报文为应答器安全报文长度的整数倍时, BTM报文层不能正确译码的概率存在拐点;拐点的变化率随着整数倍数的增大而减小, 随着BTM接收报文误比特率的减小而增大。 关键词： 应答器传输系统; 可靠性评估; 马尔可夫过程; 列车运行速度; 作者简介：李正交 (1986—) , 男, 河南南阳人, 实验师, 博士研究生。E-mail:lizhj@ 收稿日期：2016-05-30 基金：国家自然科学基金 U1334211) Reliabilty Evaluation of Balise Transmission System Considering Train Velocity LI Zhengjiao CAI Baigen DAI Shenghua LU Debiao LIU Jiang School of Electronic and Information Engineering, Beijing Jiaotong University; Abstract： To evaluate the reliability of balise transmission system quantitatively, and analyze the influence of train velocity on system reliability evaluation, a reliability evaluation method based on Markov process was proposed.The probability that the message layer of balise transmission module (BTM) can not be correctly decoded was used as an index of system reliability evaluation.The Ishikawa diagram method was used to classify the factors that affect the system reliability evaluation into dynamic and static factors, to analyze the influence of train speed on the number of message bits received by BTM, and the bit error rate.The evaluation method was verified finally.The results show that system reliability is affected by train velocity mainly through the number of bits available for BTM.When the message received by BTM is an integral multiple of telegram window bits, an inflection point is observed in the probability that the BTM msessage layer can not decode correctly.The change rate of the inflection point decreases with the increase of integral multiple.The change rate of the inflection point increases with the decrease of the bit error rate of the message received by BTM.