HLA仿真系统实时性改进方法关键技术的分析

Key technology of real time performance improvement of the simulation system based on HLA

摘要:

为了提高基于高层体系结构(HLA)分布式仿真系统的实时性,使其能够运用到半实物仿真系统中,提出采用HLA桥接技术的HLA实时性改进策略．在利用HLA桥实现多联邦互联的基础上,HLA仿真系统中的各个联邦以并行计算的形式运行． 给出了HLA桥的具体结构和HLA桥接仿真系统的设计实现方法,基于现有的桥接系统,实现了属性的公布-定购功能、属性的更新反射功能和等步长时间推进功能．通过仿真实验验证了基于HLA桥的仿真系统较原有非桥接系统在提高系统实时性方面的有效性．通过HLA桥实现的半分布式RTI可以提高RTI系统的实时性．

Abstract:

To improve the real time performance of simulation system based on HLA, and make it be taken on hardware-in-loop simulation system, a novel method based on HLA bridge was proposed. By using this strategy to interconnect federations, the federations execute in the form of parallel computing. After describing the structure of HLA bridge, the design and implementation of a HLA simulating system based on HLA bridge and parallel RTI are introduced in detail. Then the publish-subscribe function, update-reflect function and equal time step advance function of HLA bridge are realized. At last, simulation results show that the real-time performance of simulating system based on HLA bridge and parallel RTI is better than that of original system. This is an effective method in real time performance improvement.