并行分布实时仿真的时间管理算法研究  

Research and Application of Time Management in Parallel and Distributed Real-time Simulations

作　　者：李婷珽 韩亮[1] 王江云[1] 

机构地区：[1]北京航空航天大学自动化科学与电气工程学院,北京100191

出　　处：《系统仿真学报》2013年第8期1783-1788,共6页Journal of System Simulation

摘　　要：并行分布实时仿真技术对大规模复杂系统的实时仿真提供了便利,近年来日益成为研究的热点。时间是分布式仿真中的重要概念;时间管理自然成为了分布仿真的关键技术。实时仿真对仿真时间的特殊要求,使得系统中的时钟同步与时间推进成为系统研究的关键。在探讨并行分布式仿真中的通用时间管理机制的基础上,从内同步和外同步两个角度研究了并行分布式实时仿真系统的时间推进方案和时钟同步方法;基于高速实时网络,提出了"共享时钟源"的时钟同步策略;结合具体的应用需求,给出了一种优先级轮询的时间管理算法。Parallel and distributed real-time simulation provides convenience for real-time simulation of large- scale complex systems, and it has become a hotspot of research in recent years. Time is the core concept in Distributed Simulation and the Time Management is a key technology in the Distributed Interactive Simulation. There is a special time requirement in the real-time simulation, so the research in the clock synchronization and time marching is an important topic. Based on discussing the general Time management mechanism of Parallel and Distributed simulation, the time marching schemes and the clock synchronization methods of Parallel and distributed real-time simulation systems were studied from the internal synchronization and external synchronization two angles. Then a clock synchronization strategy named ＂Share the Clock Source＂ was proposed based on the high speed real-time network. Finally, combined with the specific application requirements, a time management algorithm of Priority Level Polling was given.

关 键 词：并行分布实时仿真 时间推进 时钟同步 共享时钟源 优先级轮询 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]