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综合核心处理系统是航空电子综合化模块化的关键支撑技术。如何对其性能指标进行评价是一个非常重要的理论和工程问题。首先建立了综合核心处理器模型、任务模型。然后基于ARINC 653标准建立了双层分区调度模型,该模型实现了不同安全关键级别应用软件之间的隔离。根据离散事件仿真方法,建立了系统仿真模型。在此基础上编制了基于Visual C++平台的系统仿真程序,最后提取ICD接口控制文件进行了实例仿真,分析了任务的可调度性及系统的实时性,其结果对指导新一代航电系统设计具有重要意义。
Integrated core processing system is avionics integrated modular key support technology. How to evaluate its performance index is a very important theoretical and engineering problem. First established a comprehensive core processor model, task model. Then based on the ARINC 653 standard, a two-tier partition scheduling model is established, which implements the isolation of the application softwares with different security critical levels. According to discrete event simulation method, a system simulation model is established. Based on this, a system simulation program based on Visual C ++ platform is compiled. Finally, the control file of ICD interface is extracted and simulated. The schedulability and real-time of the system are analyzed. The results are helpful to guide the design of next generation avionics system Significance.