电解槽电流测量模型建模及测量位置的研究  

Research on the modeling method of current measurement model and measuring position for electrolytic cell

作　　者：赵仁涛[1] 紫京浩 范涵奇[1] 张志芳[1] 铁军[1] 

机构地区：[1]北方工业大学机电工程学院,北京100144

出　　处：《仪器仪表学报》2014年第3期496-503,共8页Chinese Journal of Scientific Instrument

基　　金：国家科技支撑计划(2012BAE08B09)资助项目

摘　　要：铝电解槽中的导电导体以矩形或近似矩形导体居多。在测量电解槽阳极电流分布时,线性霍尔传感器阵列拓扑结构及摆放的位置对测量结果有很大影响。通过MATLAB仿真,建立了能对有限长矩形导体周围磁感应强度精确求解的三重积分模型,根据拟合数据得出形状系数的向量式,进而获得电流测量模型的解析表达式。在此基础上,研究了线性霍尔传感器阵列的位置变化对测量精度的影响。最后,通过现场实测数据分析,验证了理论模型的有效性,并提出在实际测量过程中对线性霍尔传感器阵列位置的具体要求。A majority of the conductors in aluminum reduction cell are rectangular or approximate rectangular conductors.The topology structure and layout position of linear Hall sensor array have a great influence on the measurement results when the anode current distribution in the aluminum reduction cell is measured.In this paper,a triple integral model that can accurately solve the magnetic induction around the finite length rectangular conductor is established with MATLAB simulation,and the vector formula of the form coefficient is obtained according to the fitted data,then the analytical expression of the current measurement model is obtained.On this basis,the influence of the position variation of the linear Hall sensor array on the measurement accuracy is studied.Finally,field example data analysis proves the effectiveness of the theoretical model,and suggests the detailed requirements for the layout position of the linear Hall sensor array in actual measurement process.

关 键 词：阳极电流 传感器拓扑 二次函数模型 形状系数 

分 类 号：TF821[冶金工程—有色金属冶金] TH73[机械工程—仪器科学与技术]