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Design of PLC for intelligent submerged arc welding system
Author(s): 
Pages: 68-71,111
Year: Issue:  7
Journal: Electric Welding Machine

Keyword:  submerged arc weldingDC Motorcontrolling;
Abstract: 针对埋弧焊机的工艺特点和焊接需求,设计了一套PLC控制的智能焊接系统.设计了送丝电机和行走电机的控制过程,给出其PLC控制程序;理论分析焊接电流和焊接电压的PID闭环控制方法,确保调整电弧电压时,焊接电流随电压值的变化偏离原来的设定值.分析其人机界面的通信协议和控制方式,对上位机接收到的双丝埋弧焊现场设备的电流和电压信号分别进行PID控制,保证焊接过程中电流和弧长的稳定;在控制系统焊接参数数据库中,实现了焊接参数存储、添加和删除功能,保存优质焊缝焊接参数.
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