基于微分灵敏度计算的模拟集成电路故障定位

提出了一种基于微分灵敏度计算的模拟集成电路故障定位方法。利用故障电路输出参数相对偏差的二阶 Taylor级数展开和 Newton- Raphson算法可以计算出各元件的相对偏差值。实验结果表明 ,该方法能够准确地进行模拟集成电路故障定位 ,特别是软故障定位。

一种面向功能的分层高效故障诊断算法

随着系统复杂程度的增加 ,如何快速、准确地确定系统故障的位置一直是该领域的研究热点 .实现的一种面向功能的分层诊断算法 ,能较显著地减少对复杂系统故障进行诊断的时间 ,又具有较高的故障定位精度 .其基本思想是先完成对系统基本功能模块的封装和构造 ,在此基础上 ,算法先在功能级上对系统进行故障诊断 ,当确证某功能模块包含故障时 ,再对其进行再分层诊断 ,以此循环 ,直到检测到故障为止 .讨论了该算法的实现过程 ,并与其他方法进行了比较 .

Inter-Circuit Fault Location Algorithm for Two-Parallel Transmission Line

A novel numerical algorithm of fault location estimation for four-line fault without ground connection involving phases from each of the parallel lines is presented in this paper. It is based on one-terminal voltage and current data. The loop and nodal equations comparing faulted phase to non-faulted phase of two-parallel lines are introduced in the fault location estimation model, in which the source impedance of a remote end is not involved. The effects of load flow and fault resistance on the accuracy of fault location are effectively eliminated, therefore a precise algorithm of locating fault is derived. The algorithm is demonstrated by digital computer simulations.