摘要
文中针对焊接机器人工作所处的复杂电磁环境,对其电弧式传感器进行了抗电磁干扰分析。首先结合弧焊机器人的工作原理,探讨了机器人焊接时产生的电磁骚扰源特性,通过骚扰源特性分析了电磁骚扰源中骚扰信号对电弧式传感器的干扰耦合机理;接着根据干扰耦合机理,分别从抑制骚扰源信号传播、切断耦合通道和降低敏感设备的敏感性3个方面对电弧式传感器进行了抗电磁干扰分析;最后进行了近场串扰耦合仿真分析。分析结果表明,在信号经传输线传输的过程中,若传输线有适宜的终端,电感性近场串扰就会明显降低,电弧式传感器提取信号产生偏差的次数就会减少,从而改善电弧式传感器电磁干扰问题。该研究可为电弧式传感器电磁抗干扰研究提供理论依据。
According to the complex electromagnetic environment in the work process of welding robots, the anti-interference of arc welding sensors in arc welding robot is analyzed in this paper. Firstly, the characteris- tics of electromagnetic disturbance source during welding are discussed. And combined with the characteristics of the disturbance source, the interference coupling mechanism of the disturbance signal in the electromagnetic disturbance source to the arc sensor is analyzed. Then, by the interference coupling mechanism, an anti-inter- ference analysis of the arc sensor is carried out from suppressing disturbance source signal transmission, cut- ting off the coupling channel and reducing sensitivity of the sensitive device. Finally, the near-field crosstalk coupling simulation analysis is conducted. The analysis results show that if the transmission line has a suitable terminal, the inductive near-field crosstalk will be significantly reduced during signal transmission through the transmission line, the number of times that the arc sensor picks up the signal will be reduced and thus the electromagnetic interference of the arc welding sensor will be improved. This study can provide a theoretical basis for the research on electromagnetic anti-interference of the arc sensor.
作者
张崟
李蓉
张巨勇
何凯
陈志平
李春光
严瑞斌
ZHANG Yin;LI Rong;ZHANG Ju-yong;HE Kai;CHEN Zhi-ping;LI Chun-guang;YAN Rui-bin(Hangzhou Dianzi University,Hangzhou 310018,China)
出处
《电子机械工程》
2018年第4期10-14,39,共6页
Electro-Mechanical Engineering
基金
国家自然科学基金委员会-中国科学院天文联合资助项目(U1631118)
关键词
焊接机器人
电磁兼容
电弧式传感器
抗干扰
welding robot
electromagnetic compatibility
arc welding sensor
anti-interference
