基于VxWorks653分区操作系统的IMA设计与实现

Design and Implementation of IMA Based on VxWorks653 Partition Operation System

综合模块化航电系统(Integrated Modular Avionics System,IMA)在飞机航电设备的研制中逐渐得到应用。为了完整地说明IMA的设计方法,以某型飞机航电系统的升级改进为背景,提出一种基于VxWorks653分区操作系统的IMA方案,首次实现将两个独立分系统的设备集成到一台IMA中,方案对IMA的软件架构、分区任务规划、时间空间资源分配等关键要素进行设计和实现,并建立实验平台。实验数据表明,IMA运行正确,可以实现原有系统的功能,分区之间时间和空间隔离机制工作正常,通信工作正常,具有较高稳定性和可靠性。

Integrated Modular Avionics（IMA）system has gradually been applied to the design of the aircraft avionics equipments. In order to elaborate the method of designing IMA,taking an example of upgrading a set of aircraft avionics systems used in certain aircraft on service,this paper proposes a programming scheme of an IMA based on the VxWorks653 partition operating system. This scheme integrates two independent subsystem equipments into a single IMA,designs and implements the key components such as the software architecture,partition mission planning,time and space resources allocation,and builds the experimental test-bench. The experimental data show that the new IMA program can achieve all functions of the old systems,and that the isolation mechanism of the time and space works correctly between the partitions as well as the communication system. It has been shown that the IMA has high stability and reliability.