Validity Analysis of the G－Criterion for Diagnosis

张志涌; 杨祖樱

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Validity Analysis of the G－Criterion for Diagnosis

更新时间：2025-12-08

- Validity Analysis of the G－Criterion for Diagnosis
- Acta Electronica Sinica Issue 7, (1997)
- 作者机构：
  
  福州大学自动化所
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN710
- Published：1997
- 稿件说明：
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[1]张志涌,杨祖樱.G参数诊断准则的理性分析[J].电子学报,1997(07):102-104.

张志涌, 杨祖樱. Validity Analysis of the G－Criterion for Diagnosis[J]. Acta Electronica Sinica, 1997, (7).
[1]张志涌,杨祖樱.G参数诊断准则的理性分析[J].电子学报,1997(07):102-104. DOI：

张志涌, 杨祖樱. Validity Analysis of the G－Criterion for Diagnosis[J]. Acta Electronica Sinica, 1997, (7). DOI：

摘要

本文研究一种模拟电路故障诊断经典方法（即Ｇ参数诊断法）的正确性和合理性．研究表明：（１）估计Ｇ参数的数学模型是错误的；（２）由错误模型所得的Ｇ参数估计集必定是真实Ｇ参数集的有偏估计；（３）假如不满足严格的约束条件，Ｇ参数诊断法将给出错误的诊断结论．本文还给出了Ｇ准则能否正确诊断的预报公式，该公式很容易由电路标称数据计算．

Abstract

This paper is to study the validity of the G-diagnosis algorithm that has been regarded as a classical algorithm for faulty diagnosis in analog circuits. The results of this study indicate that: （1）wrong mathematical models are used to estimate G-parameters ; （2）the estimated Gparameters must be biased against actual G-parameters;（3）the G-algorithm will give mistaken diagnosis conclusions if harsh conditions can not be satisfied. The paper proposes formulas

which are easily calcuated with nominal data of circuits

to forecast if the G-diagnosis algorithm can locate faults correctly or not.

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CHEN Lin

JIA Yan

ZOU Peng

张志涌

杨祖樱

ZHU Xuan

RUAN Jiang-jun

Related Institution

Dept. of Computer, National University of Defense Technology

Institute of Automation Fuzhou University

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