电焊机2024，Vol.54Issue(6)：25-29,5.DOI:10.7512/j.issn.1001-2303.2024.06.05
电阻焊电流信号积分漂移软件补偿方法
Software Compensation Method of Integral Drift for Resistance Welding Current Signal
容爱琼 1曾家铨2
作者信息
- 1. 广州城市理工学院 机器人工程学院,广东 广州 510800
- 2. 仲恺农业工程学院 机电工程学院,广东 广州 510225
- 折叠
摘要
Abstract
In order to meet the requirements for long-time detection of resistance welding current and simplify the detection circuit,a drift compensation method based on software compensation was explored to address the integral drift problem in the signal conditioning when Rogowski coils were used.Several domestically produced operational amplifiers were used to construct integrators,and the drift rate of the integrator output signal was detected in constant current control mode.The av-erage drift rate was superimposed during data processing to achieve software compensation.The integral drift voltage was treated as an error in current detection,and the accuracy of software compensation during the 2 second process of constant current output was analyzed using relative error.The results show that the drift compensation method based on software compensation performs data correction after signal detection,reducing the dependence on hardware compensation.The aver-age relative error within the measured current range of 1～4 kA does not exceed 1.0%,which can meet the requirements of long-time detection of resistance welding current.This compensation method enriches the current signal processing methods based on Rogowski coils and has good engineering applicability.关键词
电阻点焊/电流检测/罗氏线圈/漂移补偿/软件补偿Key words
resistance spot welding/current measurement/rogowski coil/drift compensation/software compensation分类
矿业与冶金引用本文复制引用
容爱琼,曾家铨..电阻焊电流信号积分漂移软件补偿方法[J].电焊机,2024,54(6):25-29,5.
