Modular Fault Diagnosis for the Closed-Loop Operational Amplifier Based Analog Circuits

胡梅; 王红; 杨士元

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Modular Fault Diagnosis for the Closed-Loop Operational Amplifier Based Analog Circuits

首发时间：2008-09-05

Hu Mei ¹ Wang Hong ¹ Yang Shiyuan ¹

1、Department of Automation,Tsinghua University

Abstract：This paper describes a dictionary method based on slope fault feature for hard and soft faults diagnosis of modular analog circuit. In complicated circuit when the closed-loop operational amplifier (CLOA) is used as a basic building block, the circuit can be divided into several modules based on the CLOA, and then extract the unified slope fault feature of each module to establish fault dictionary, which can diagnose hard and soft faults of all the components and the OA of the corresponding module. Finally, experiments are demonstrated to validate the efficiency of the proposed approach: the coverage of hard and soft faults of OA is 64.4% and 86.4% respectively, and the fault coverage of passive components is 100%.

keywords： analog circuit fault diagnosis CLOA slope fault feature modular

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Modular Fault Diagnosis for the Closed-Loop Operational Amplifier Based Analog Circuits

胡梅 ¹ 王红 ¹ 杨士元 ¹

1、清华大学自动化系

摘要：This paper describes a dictionary method based on slope fault feature for hard and soft faults diagnosis of modular analog circuit. In complicated circuit when the closed-loop operational amplifier (CLOA) is used as a basic building block, the circuit can be divided into several modules based on the CLOA, and then extract the unified slope fault feature of each module to establish fault dictionary, which can diagnose hard and soft faults of all the components and the OA of the corresponding module. Finally, experiments are demonstrated to validate the efficiency of the proposed approach: the coverage of hard and soft faults of OA is 64.4% and 86.4% respectively, and the fault coverage of passive components is 100%.

关键词： analog circuit; fault diagnosis; CLOA; slope fault feature; modular

基金：

1. 教育部博士点基金,国家自然科学基金,国家自然科学基金（20070003122,60773142,60633060）

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Hu Mei,Wang Hong,Yang Shiyuan. Modular Fault Diagnosis for the Closed-Loop Operational Amplifier Based Analog Circuits[EB/OL]. Beijing:Sciencepaper Online[2008-09-05]. http://www.paper.edu.cn/releasepaper/content/200809-175.

No.2381421810512206****

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论文编号	200809-175
论文题目	Modular Fault Diagnosis for the Closed-Loop Operational Amplifier Based Analog Circuits
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