未来真空管道磁浮列车设计速度将在100-300 m/s,对于如此高速运行的列车系统,其救援方案必须完善,否则将会留下安全隐患造成重大的人员伤亡和严重的经济损失。而在诸救援中列车制动失效和管道失压将是未来真空磁浮列车安全运行首要研究的因素。本文以牛顿第二定律为依据,通过对分析模型得到的基本关系方程的推导、求解,从而推导出列车在拦阻索减速制动过程中,其拦阻位移、拦阻力和列车初速度三者之间的基本关系式,同时也推导出管道失压过程中,列车安全运行所需相邻闸门之间距离、管道阻塞比和真空度三者之间的关系式.在MATLAB环境下对以上关系式进行仿真分析,我们得到制动失效时拦阻力、列车初速度和拦阻位移三者之间的优化值;同时也得到管道失压时相邻真空闸门之间距离、管道真空度和管道阻塞比三者之间的优化值。以上仿真优化值将为真空管道列车系统设计提供理论依据。
We addressed the issue of rescuing the magnetic-levitation( maglev) train running at high speed in the evacuated tube,when serious accidents should originate from either train-brake failure or building-up of pressure in the pipeline. The arresting of the maglev train was physically modeled,empirically approximated,and mathematically simulated with software package MATLAB. The impacts of the major factors involved,such as the arresting displacement,arresting force,initial speed of the maglev train,the safe distance of the adjacent gates,blockage ratio,and pressure,on the rescue were simulated. In case of the train brake failure,the arresting force,arresting distance,and initial speed were optimized; whereas in case of the pressure building-up,the distance between adjacent gates,pipeline pressure,and pipe blocking were optimized too. We suggest that the simulation be of much technological interest for the future transportation of the maglev train.