作者：朱敏¹, 许晴², 唐小峰^1,3, 魏洪波⁴

作者单位：1. 海军航空工程学院科研部, 山东 烟台 264001;
2. 91635部队, 北京 102200;
3. 92514部队, 山东 烟台 264007;
4. 武警四川省总队直升机大队, 四川 德阳 618101

关键词：模拟电路;测试性分析;故障诊断;故障对布尔表;核密度估计

摘要：

针对传统测试性模型故障分辨率低的问题，提出一种基于故障对布尔表的模拟电路测试性分析与故障诊断方法。根据故障对布尔表的特点构建新的测试性模型，研究相应的故障检测率和隔离率预计方法。基于核密度估计实现实数域样本数据到故障对布尔表的转换，并采用一对一的投票策略完成对实测数据的故障诊断推理。以Sallen-Key带通滤波电路为例开展仿真实验，通过与经典的相关性模型以及整数编码字典进行比较，表明所提方法具有更加突出的故障检测与隔离能力。

Research on testability analysis and fault diagnosis of analog circuits based on KDE-FPBT

ZHU Min¹, XU Qing², TANG Xiaofeng^1,3, WEI Hongbo⁴

1. Department of Scientific Research, Naval Aeronautical & Astronautical University, Yantai 264001, China;
2. Unit 91635 of PLA, Beijing 102200, China;
3. Unit 92514 of PLA, Yantai 264007, China;
4. Helicopter Battalion of Armed Police Corps, Deyang 618101, China

Abstract: With regard to the low fault recognition problem of traditional testability models, a analog circuit testability analysis and fault diagnosis method based on fault-pair Boolean table (FPBT) is proposed. Firstly, a novel testability model is created according to the characteristics of the FPBT, and the corresponding predicting method for the fault detection rate and fault isolation rate is studied. Then, the transformation from the real number field sample data to the FPBT is realized based on kernel density estimation, and the fault diagnosis and reasoning of measured data are implemented based on a "one-against-one" voting strategy. Finally, simulation experiments are performed on the Sallen-Key bandpass filter circuit. The results show that the proposed method is more prominent in fault detection and isolation after comparing it with traditional methods, including the dependency model and integer-coded dictionary.

Keywords: analog circuit;testability analysis;fault diagnosis;fault-pair Boolean table;kernel density estimation

2018, 44(2): 11-15  收稿日期: 2017-05-18;收到修改稿日期: 2017-07-15

基金项目: 国家自然科学基金项目（61473306）

作者简介: 朱敏(1990-),男,江苏如皋市人,博士研究生,专业方向为复杂电子设备自动测试与故障诊断。

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