容差电路的故障诊断最小容差估计算法
FAULT DIAGNOSIS FOR ANALOG CIRCUITS WITH TOLERANCEMINIMUM TOLERANCE ESTIMATION ALGORITHM
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摘要: 本文从容差对k故障诊断法的影响机理出发,提出了一种具有明确物理意义的容差电路故障诊断方法最小容差估计算法。这种方法可通过较少的计算,获得等效故障源的有效估计。特别重要的是,由此算法还可派生出一种无须迭代的自适应次优算法,计算量很小,适合于实时性要求较高或电路规模较大的场合。Abstract: Based on the influence of circuit element tolerances to the k-fault diagnosis, a method of fault diagnosis is presented which is called as minimum tolerance estimation algorithm and has clear physical meaning. Using this method, an effective estimation of the equivzlent fault sources can be obtained with less computing time. It is especially worthwhile to point out that a self-adaptive sub-optimal algorithm, which comes from the above method, requires even less computing-labor and is particularly suitable for more complicated circuits as well as real-time fault location.
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杨嘉伟, 模拟电路支路模块级故障诊断的理论与实践研究, 清华大学自动化系博士学位论文, 北京, 1991年.[2]L. Hu et al., A Stochastic Model Analog Fault Diagnosis with Tolerance, Proc. IEEE Int. Symp. on CAS, Montreal, Canada, May 1984, pp. fi80-682.[3]Z. F. Huang, R. W. Liu, A Theory of Generalized Linear Functions: II, Estimation, Tech. Report EE-852, University of Motre Dame, Indiana, USA, (1985).[4]周新就, 杨叔孔, 通信学报, 11(1990)5,81-86.[5]复旦大学编, 概率论(第二册), 数理统计(第二分册), 高等教育出版社, 北京, 1987年, 第147-159页.[6]杨维权等, 多元统计分析, 高等教育出版社, 北京, 1989年, 第37-49页. -
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