(1.中南大學(xué) 信息科學(xué)與工程學(xué)院, 長沙 410083;
2. 湖南大學(xué) 電氣與信息工程學(xué)院, 長沙 410082)
摘 要: 對電解槽控制線路故障元件存在范圍的確定，提出了K 故障下診斷的新方法。它是一種確定故障元件存在的最小范圍的方法，即在十分現(xiàn)實(shí)的 K 故障下，確定能代表電路所有元件并給出在 K 故障假設(shè)下的最優(yōu)可測試元件組，使故障定位工作只局限于該組元件。通過可測試值計(jì)算和規(guī)范式不確定性組與最優(yōu)可測試成分組的確定，可以確定故障元件的范圍，從而為鋁電解槽控制線路中的故障定位節(jié)省了大量的時(shí)間。
關(guān)鍵字: 電解槽； 可測試性； 不確定性組； 故障定位；參數(shù)故障診斷
of fault elements in control circuits for
aluminium reduction cell
（1. College of information science and Engineering，
Central South University,Changsha 410083, P.R.China;
2. College of Electrical and Information Engineering，
Hunan University, Changsha 410082, P.R.China）
Abstract: A method for determining the existent minimum range of fault elements in control circuit for aluminium reduction cell was presented. By assuming the quite realistic K fault hypothesis, an optimum set of testable elements that represent all the circuit elements is determined. Therefore the work for fault location can only operate in the elements of this group. So the method constitutes the first step in the development of whatever procedure for the fault location of analog linear circuits. The proposed procedure can save a lot of work for fault location of control circuits of aluminium reduction cell.
Key words: reduction cell， testability; ambiguity groups; fault location， parametric fault diagnosis.
