航空电子安全关键系统时间研究与分析

Study and analysis of aviation electronic safety critical system time

操作系统的时间分析一般分为三个阶段,程序级,任务级以及系统级。主要对操作系统进行评估、可调度分析和端到端延迟分析等。同时采用IMATime时间分析工具对操作系统FCOS进行了时间分析,包括函数级WCET分析结果,Rhealstone Benchmark评估结果以及可调度分析结果,对航空电子系统软件故障排除或恢复具有一定的借鉴意义。

Operating system time analysis is generally divided into three stages, the program level, task level and system level. This article mainly assessed operating system, schedulability analysis and end-to- end delay analysis. At the same time, using the IMATime time analysis tools for operating system FCOS time analysis, including the function result analysis of WCET, Rhealstone Benchmark assessment results and schedulability analysis results, the avionics systems software trouble shooting or recovery has certain reference significance.