| 一种模拟电路故障字典的改进方法 |
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| 引用本文： | 王阳,王琳,王学伟,马静.一种模拟电路故障字典的改进方法[J].北京化工大学学报(自然科学版),2011,38(2):129-133. |
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| 作者姓名： | 王阳 王琳 王学伟 马静 |
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| 作者单位： | 北京化工大学机电工程学院,北京,100029;北京化工大学信息科学与技术学院,北京,100029 |
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| 摘 要： | 鉴于传统的故障字典法诊断准确度低、诊断速度慢等缺点，本文将概率论及数理统计原理引入传统的故障字典法中对其进行改进。提取电路各待测节点电压作为电路特征，基于概率论选取测试节点，应用极大极小准则使模糊域划分更为合理。以稳压电源电路为实例，对改进后方法与传统方法进行实验对比，结果表明，本文所述方法故障诊断准确度更高、测试节点数目更少，更为合理有效。
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| 关 键 词： | 故障字典 概率论 极大极小准则 模糊域 |
| 收稿时间： | 2010-09-25 |
An improved analog circuit fault dictionary |
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| WANG Yang WANG Lin WANG XueWei MA Jing.An improved analog circuit fault dictionary[J].Journal of Beijing University of Chemical Technology,2011,38(2):129-133. |
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| Authors: | WANG Yang WANG Lin WANG XueWei MA Jing |
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| Institution: | 1. College of Mechanical and Electrical Engineering; 2. College of Information Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China |
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| Abstract: | The traditional fault dictionary method for diagnostics is slow and its accuracy is low.In order to improve it,we have introduced the principles of probability theory and mathematical statistics into the traditional fault dictionary method.The circuit characteristics of nodes were extracted from a test circuit voltage in normal working and various failure modes.The selection of tested nodes based on probability theory and the application of the maximin criterion divides the fuzzy field more reasonably.Using... |
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| Keywords: | fault dictionary probability maximin criterion fuzzy field |
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