点焊电流有效值神经网络实时计算方法研究  

STUDIED ON THE CALCULATING METHOD OF THE CURRENT'S VIRTUAL VALUE DURING THE RESISTANCE SPOT WELDING PROCESS USED ANN IN REAL TIME

作　　者：方平[1] 熊丽云[1] 林一松 黄石生[3] 

机构地区：[1]南昌航空工业学院材料工程系,南昌330034 [2]广州数控设备厂技术部,广州510000 [3]华南理工大学焊接研究所,广州510641

出　　处：《机械工程学报》2004年第11期148-152,共5页Journal of Mechanical Engineering

基　　金：广东省重大科技攻关基金(2KM00701G);南昌航空工业学院自选项目(EC200201048)资助

摘　　要：通过理论分析,推导出交流电阻点焊电流有效值实时计算方程,建立了不同功率因数角的电流有效值系数K的神经网络计算模型,研究出电阻点焊电流有效值神经网络实时计算方法。在以DSP为核心的电阻点焊测控系统中实现了交流电阻点焊电流有效值实时计算。理论分析和实际检测表明,该方法的检测误差小于±0.9％,并且能够在二分之一周期内完成电阻点焊电流有效值的检测和计算。该方法的研究为电阻点焊质量的精确控制提供了可靠的保障。It is educed the calculating equation of the current's virtual value, and it is erected the ANN calculating model of K and the calculating method of the current's virtual value in different power factor angle during the alternation resistance spot welding. The current's virtual value is calculated in real time in the control system of resistance spot welding based on DSP used this calculating model. The error analyzing and actual test result show, the error of this method is less than ± 0.9%,and measuring and calculating the current's virtual value can be completed in half a cycle. This method ensure precision control of quantity during the alternation resistance spot welding.

关 键 词：电阻点焊 电流有效值 神经网络 实时检测 

分 类 号：TG438.2[金属学及工艺—焊接]