电传飞控计算机子系统BIT设计研究  

Design of BIT for flight control computer system

作　　者：韩建辉 江飞鸿 刘鑫 HAN Jianhui;JIANG Feihong;LIU Xin(AVIC The First Aircraft Institute,Xi'an 710089,China)

机构地区：[1]航空工业第一飞机设计研究院,西安710089

出　　处：《民用飞机设计与研究》2023年第4期70-81,共12页Civil Aircraft Design & Research

摘　　要：飞控计算机子系统是飞行控制系统的计算和控制核心,影响着飞行安全。采用BIT进行故障检测和定位可以显著提高飞控系统安全性。现阶段的BIT设计研究中,系统级偏向于顶层功能要求的论述,计算设备的BIT研究偏重于通用计算机的软硬件论述,飞控系统向计算机子系统的需求传递和可追溯性不强,也缺乏基于系统工程的飞控计算机子系统BIT设计流程研究。通过对飞控计算机子系统架构的分析得出其通用的组成模块。以此为基础开展BIT设计研究,分析了BIT的分类及特点,提出了BIT设计的通用需求,设计了基于系统工程的飞控计算机子系统BIT设计流程,重点从飞控系统功能需求出发详细论述了飞控计算机子系统BIT的初始化、工作模态转换、测试项目、执行时序及与飞控系统功能高关联度的BIT项目测试的设计方法原理,分析了故障预测及健康管理的设计方法和减少虚警的措施。采用该设计流程和详细设计原理方法的飞控计算机子系统BIT设计通过了地面综合试验的验证。The flight control computer subsystem is the calculation and control core of the flight control system,which affects flight safety.Using BIT for fault detection and positioning can significantly improve the safety of the flight control system.In the current stage of BIT design research,the system level tends to focus on top-level functional requirements,while the BIT research of computing devices focuses on the software and hardware of generalpurpose computers.The requirements transmission and traceability from flight control systems to computer subsystems are not strong,and there is a lack of research on the BIT design process of flight control computer subsystems based on system engineering.By analyzing the architecture of the flight control computer subsystem,its general components were identified.Based on this,BIT design research was carried out,the classification and characteristics of BIT were analyzed,general requirements for BIT design were proposed,and the BIT design process for the flight control computer subsystem based on system engineering was designed.Starting from the functional requirements of the flight control system,this paper discusses in detail the initialization,working mode conversion,testing items,execution timing,and design methods and principles of BIT project test with high correlation with the flight control system functions,and analyzes the design methods for fault prediction and health management,as well as measures to reduce false alarms.The flight control computer subsystem BIT design using this design process and detailed design principles has been validated through ground comprehensive tests.

关 键 词：机内测试(BIT) 飞控计算机子系统 故障诊断 

分 类 号：V249.11[航空宇航科学与技术—飞行器设计]