综合核心处理系统评价工具设计

Design of a Performance Evaluation Tool for Integrity Core Processor

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。

The Integrity Core Processor（ICP） system is the key technology in integrity modular avionics.How to evaluate its performance index is an important theoretical and practical problem.The ICP model and task model were established at first.Then,a hierarchical partition scheduling model was determined based on ARINC653 criterion,which implement partitioning between applications of different safety critical levels.In addition,the system simulation model was established with the method of discrete event system simulation,and the system simulation program was developed by using the Visual C＋＋ platform.Finally,with the supposed ICD,the schedulable problem of tasks and real-time performance of the system were analyzed,which result has great significance for the design of integrated modular avionic system.