摘要
LBTS(LowerBoundTimeStamp)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 ,HighLevelArchitecture)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(AdvancedSimulationTechnology RunTimeIn frastructure)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 .
The LBTS (lower bound time stamp) quarry is key problem for TM (time management) performance. An optimized method is proposed for improving the TM performance in HLA (high level architecture). It can reduce the frequency of LBTS transfer, and time-constrained federates are 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 show that RTI real time performance has been improved. Then the simulation application problems in RTI TM mechanism and solutions are discussed.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
2004年第12期1159-1162,共4页
Journal of Beijing University of Aeronautics and Astronautics
关键词
高层体系结构
运行时间框架
时间管理
时戳下限
Algorithms
Applications
Communication
Computer architecture
Costs
Multicasting
Optimization
