机载计算机RAM故障诊断技术

RAM Fault Detection Technology for Airborne Computer

中文关键词:  机载计算机  故障诊断  字寻址

英文关键词:airborne computer  fault detection  word addressing

中文摘要:

      针对RAM的典型故障模式，以及机载计算机RAM按字寻址的特点，通过对基于字的March C-算法的优化并结合所提出的隔行隔单元跳变的RAM的故障诊断算法，实现了RAM典型故障的全面检测。并以A340飞机主飞行控制计算机为例，对所提出的算法的执行效率进行了分析。结果表明，所提出的存储器故障诊断算法执行效率高，能够完全满足机载计算机地面上电启动时对存储器故障诊断快速而高效的要求。

英文摘要:

      By analyzing the typical fault modes of RAM,a fault diagnosis method for airborne computer RAMs based on word oriented March C- algorithm is presented.To achieve more comprehensive RAM diagnostic,a jump interlaced unit method is given as a complementation.Finally,A340 aircraft primary flight control computer is taken as an example to analyze the efficiency of these methods.The result shows that the methods can fully satisfy the fast and efficient detection requirements of RAMs for airborne computer on ground power up.