摘要
面向航空航天应用的时间触发以太网(TTE)对通信实时性、消息安全性提出了严苛要求,高效的全局静态调度技术有利于充分保障不同消息的服务质量。针对实时性最高的时间触发(TT)消息决定了低优先级速率受限(RC)消息的发送时刻这一问题,提出一种基于快速增量的TTE优化调度技术,通过快速增量基本调度单元回溯修正多跳延迟,优化TT消息静态调度表,提升RC消息传输性能,最后将网络调度算法应用于时间触发航电系统网络拓扑模型进行验证。仿真实验表明:在保障TT消息满足传输约束的情况下,该TTE优化调度技术有效提升了网络实时性能,RC消息的平均端到端延迟最高优化14.08%,最坏端到端延迟最高优化22.86%。
Time-Triggered Ethernet(TTE) for aeronautical and astronautical applications places stringent requirements on real-time communication and message security.Efficient global static scheduling technology is conducive to fully guaranteeing the service quality of different messages.Considering that the Time-Triggered(TT) messages with the highest real-time performance determine the transmission time of low-priority Rate-Constrained(RC) messages,a TTE optimal scheduling technology based on rapid increment is proposed.By rapidly incrementing the basic scheduling unit,backtracking to correct the multi-hop delay,and optimizing the static schedule of TT messages,the transmission performance of RC messages is improved.Finally,the network scheduling algorithm is applied to the network topology model of the time-triggered avionics system for verification.The simulation experiment shows that the TTE optimal scheduling technology effectively improves the real-time performance of the network under the condition that the TT messages satisfy the transmission constraints.The average end-to-end latency of RC messages is optimized by 14.08%,and the worst end-to-end latency is optimized by 22.86%.
作者
袁海英
王翌晨
YUAN Haiying;WANG Yichen(Faculty of Information Technology,Beijing University of Technology,Beijing 100000 China)
出处
《电光与控制》
CSCD
北大核心
2023年第2期86-90,98,共6页
Electronics Optics & Control
关键词
时间触发以太网
快速增量
调度求解算法
网络仿真
时间触发航电系统
Time-Triggered Ethernet(TTE)
rapid increment
scheduling algorithm
network simulation
time-triggered avionics system
