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微机飞行控制盒(Microcomputer-Based Flight Control Box,NFCB)是数字式飞机自动驾驶仪的核心部件。本文综述了我们正在研制的一种适用于轻型飞机自动驾驶仪的MFCB。这种MFCB采用STD总线结构,以Intel 8088CPU+8087NDP的STD模板为主处理机、并辅之以若干其它功能的STD插板构成。软件系统以一个iRMX85实时多任务操操作系统的核为基础组成。本文介绍了谊MFCB的硬件结构原理及其软件系统,并指出了采用STD总线作为MFCB总线的局限性及其可以采取的改进措施。
Microcomputer-Based Flight Control Box (NFCB) is a core component of the digital aircraft autopilot. This article summarizes a type of MFCB we are developing that is suitable for light aircraft autopilots. This MFCB uses STD bus structure, with STD template Intel 8088CPU + 8087NDP as the main processor, supplemented by a number of other features STD board composition. The software system is based on the core of an iRMX85 real-time multitasking operating system. This paper introduces the principle and software system of the hardware structure of YiYi MFCB, and points out the limitations of using STD bus as MFCB bus and the improvement measures it can take.