似相关块的识别和模拟电路故障诊断

Identification of Look-Like Correlative Blocks and Fault Diagnosis

在具有容差的模拟电路故障诊断中，似相关块的存在影响故障定位的准确性。本文利用方向能量的概念白化容差干扰，分离出最佳诊断子空间，克服似相关块的影响，从而提高了诊断的有效性。

The influence of look-like correlative blocks on the accuracy for location of faults is serious in the fault diagnosis of analog circuits with tolerance. In this poper, concepts on oriented energy are used to whiten disturbance of tolerance, seperate out an optimal diagnosis subspece, overcome the influence of look-like correlative blocks. and improve diagnosis effectiveness.