(北方工業(yè)大學 現場總線與自動化重點實驗室， 北京 100041)
摘 要: 在復雜的綜合數學模型的基礎上，利用正交多元回歸法研究了預焙電解槽中電流效率與陽極電流分布的關系， 得到一個代數方程式， 同時， 用這個代數方程式分析了陽極電流分布與電流效率的關系。 分析結果表明：陽極電流分布與電流效率都隨時間和空間而改變； 陽極電流分布的改變引起電流效率的改變； 在Kuhn Tucker 理論的基礎上， 還討論了系列電流不變時的最佳電流效率， 由于電解槽中磁場、 流場分布不均勻等原因，并非嚴格均勻的陽極電流分布才能得到最高的電流效率。
關鍵字: 鋁電解; 正交多元回歸; 電流效率; 電流分布
（ Field Bus & Automation Key Lab,
North China University of Technology,Beijing 100041, China）
Abstract: On the bases of the comprehensive mathematical model, the relation between current efficiency and anode current distribution in aluminum production was examined through using orthoganal regression design method. An algebraic equation was developed under some reasonable simplification, and based on it, the variation of current efficiency and anode current distribution was analyzed. The results show that both current efficiency and current distribution change with time and position. By use of the Kuhn Tucker theory, the optional current efficiency under given total serial current was discussed. Not strictly smooth anode current distribution results in optional current efficiency because of the uneven physical fields distribution.
Key words: current efficiency; aluminum electrolysis; current distribution; orthogonal regression design
