SSE在电气化铁路列车运行模拟中的应用  

Applications of SSE on electrified railway train operation simulation

作　　者：丁勇[1] 何天键[2] 冯汝辉[2] 刘海东[1] 毛保华[1] 

机构地区：[1]北方交通大学交通运输学院,北京100044 [2]香港理工大学电机系

出　　处：《铁道学报》2003年第4期19-22,共4页Journal of the China Railway Society

基　　金：交通运输系统模拟部级实验室开放课题(2001 01);香港理工大学研究基金资助(EE/P00044)

摘　　要：探讨了电气化铁路列车运行模拟中的关键问题,开发了一套可供模拟计算与方案评价的电气化铁路列车运行模拟系统,重点介绍了该系统的主体结构、计算流程与牵引供电计算的SSE算法设计。本文采用Intel处理器(PentiumⅢ,PentiumⅣ)提供的SSE(单指令多数据流扩展指令集)技术,在PC机上实现了牵引供电的并行计算,加快了计算速度,使列车运行模拟系统的整体计算速度提高了两倍左右。This paper discusses the key issues about train operation simulation on electrified railways. A simulation system has been developed for computational simulation and scheme evaluation. As an emphasis, the paper introduces the system structure, flow chart and traction power supply model. The calculating of traction power supply is a CPUintensive work. The Intel architecture processors (Pentium Ⅲ, Pentium Ⅳ) introduces Streaming SIMD Extensions (SSE), that is an efficient execution model to accelerate the applications. The paper discusses the methods to accelerate the calculation of traction power supply. Main procedures have been redesigned by exploiting SIMD parallelism in the PC platform. Finally, the experimental results demonstrate that SSE can speed up the calculation of traction power supply. Compared with convention algorithm implementation, the parallel algorithm enhances performance about two times.

关 键 词：列车运行模拟 牵引供电计算 计算机模拟 并行算法 SSE 

分 类 号：U223.2[交通运输工程—道路与铁道工程] U260.13[机械工程—车辆工程]