北京航空航天大学学报 ›› 2004, Vol. 30 ›› Issue (12): 1159-1162.

• 论文 • 上一篇    下一篇

一种被动更新LBTS的HLA时间管理方案

胡亚海, 徐勇波, 彭晓源   

  1. 北京航空航天大学 自动化科学与电气工程学院 北京 100083
  • 收稿日期:2003-07-01 出版日期:2004-12-31 发布日期:2010-09-21
  • 作者简介:胡亚海(1974-),男,陕西西安人,博士生, hyh@cpit.com.cn.

Method of updating LBTS passively for HLA time management

Hu Yahai, Xu Yongbo, Peng Xiaoyuan   

  1. School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
  • Received:2003-07-01 Online:2004-12-31 Published:2010-09-21

摘要: LBTS(Lower Bound Time Stamp)查询是影响时间管理性能的重要因素.为提高高层体系结构(HLA,High Level Architecture)中时间管理的性能,提出了一种减小最小时间戳下限LBTS传递次数的优化方法,将主动查询LBTS变成当LBTS改变时才通知相应的受控成员.应用可靠组播服务,降低了时间管理的通讯代价,将算法应用在具有自主知识产权的AST-RTI(Advanced Simulation Technology-Run Time Infrastructure)中,应用系统证明能有效提高RTI的实时性.最后针对RTI时间管理机制在仿真应用中带来的问题以及解决方法进行了讨论.

Abstract: The LBTS (lower bound time stamp) quarry is key problem for TM (time management) performance. An optimized method will be proposed for improve the TM performance in HLA(high level architecture). It can reduce the frequency of LBTS transfer, and time-constrained federates will be notified LBTS only when LBTS is changed rather than they quarry LBTS actively. Reliable multicast services are applied to reduce the communication cost. These algorithms have been used in TM in self-developed AST-RTI (advanced simulation technology-run time infrastructure), and application systems showed that RTI real time performance has been improved. Then the simulation application problems in RTI TM mechanism and solutions will be discussed.

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