多余度飞控计算机通道故障逻辑技术研究

在航空电子系统中,飞控计算机系统用于控制飞机的飞行功能,要求具有极高的可靠性,必须采用容错技术来满足要求。容错的重要方法是冗余。目前的飞控计算机系统,大多采用双余度、三余度及四余度的容错计算机。在余度计算机中,每一余度称为一个通道,每个通道均具有输出控制能力,因此余度计算机输出控制权的确定和交接就变得至关重要。介绍了道故障逻辑的功能需求和结构,重点研究了一种3×2余度飞控计算机系统通道故障逻辑的设计。

Research of channel fault logic technology for multi-redundancy flight control computer

In Avionics,the flight control computer system is used to control the flight functions of aircraft. The fault-tolerant technique should be adopted in the system to achieve high reliability. Redundancy is very important in fault-tolerant technique. The dual-redundancy,triplex-redundancy and four-redundancy fault-tolerant computers are used in most of the flight control com-puter system at present. In the redundancy computer,each redundancy is called a channel,and each channel has the output control ability,so it is very important for determination and hand-over of computer output control right. The function demands and configuration of CFL are introduced in this paper. The design of CFL used in 3＆#215;2 redundancy flight control computer system is researched emphatically.