| 线性模拟电路的一种故障定位法——改进的节点定位法 |
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| 引用本文： | 郑永红,王远.线性模拟电路的一种故障定位法——改进的节点定位法[J].北京理工大学学报,1988(3). |
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| 作者姓名： | 郑永红 王远 |
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| 作者单位： | 北京工业学院应用数学系
(郑永红)，北京工业学院自动控制系(王远) |
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| 摘 要： | 本文采用节点导纳矩阵表示的故障诊断方程,给出了线性有源网络节点故障定位算法,该方法避免了不必要的运算。整个节点故障定位过程中只需讨论双图公共生成树是否存在,并对此问题提出了新的判断方法,当算法不能对故障唯一定位时,仍有可能给出故障区域。该算法用FORTRAN语言编制成程序在IBM-PC微型机上进行了验证。
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| 关 键 词： | 故障诊断 线性模拟电路 节点 双图 公共树 |
AN IMPROVED METHOD FOR LOCATING NODE-FAULTS IN LINEAR ANALOG CIRCUITS |
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| Zheng Yonghong Wang Yuan.AN IMPROVED METHOD FOR LOCATING NODE-FAULTS IN LINEAR ANALOG CIRCUITS[J].Journal of Beijing Institute of Technology(Natural Science Edition),1988(3). |
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| Authors: | Zheng Yonghong Wang Yuan |
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| Affiliation: | Zheng Yonghong Wang Yuan(Department of Applied Mathematics) (Department of Automatic Control) |
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| Abstract: | A method for locating node-faults in.linear analog circuits is proposed on the basis of fault diagnosis equations written in terms of node-admittance matrix. It improves the reliability of diagnosis by avoiding matrix inversion and reducing algebraic computations. Using the concepts of two-graph and common tree, the method replaces some algebraic computations with topological computations. In order to locate the faults, it needs only to find out'whether the two graphs possess a common tree. Thus,the method also provides a new algorithm for finding common trees in two graphs. The algorithm was realized on IBM-PC using FORTRAN. The flow chart of the algorithm and some illustrative examples are also given in the paper. |
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| Keywords: | fault diagnosis linear analog circuit node two-graph common tree |
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