窄间隙埋弧焊的磁控与电感复合式焊缝跟踪方法

A hybrid magnetism-inductance seam tracking method for narrow gap submerged arc welding

针对窄间隙埋弧焊焊缝横向和高低跟踪中存在的问题,设计一种基于电感原理的新型电磁传感器,通过初级线圈磁场控制电弧摆动扫描焊接坡口,采集电流信号经过单片机处理后获得焊枪的左右偏差,控制左右调节滑块的水平运动,能够较好地解决窄间隙焊缝焊接时侧壁不易熔合的问题;通过次级线圈感应电动势的变化反映焊炬的高低位置信息,实时识别焊枪相对焊缝的高低偏差,根据焊枪高低位置变化情况,进行PID算法设计,使系统能够快速平稳实现左右和高低双向跟踪.结果表明,该传感器结构简单,灵敏度高,抗干扰能力强,为厚板窄间隙埋弧焊的跟踪提供了一种新的解决方案.

Aimed at these problems existing in seam tracking in narrow gap submerged arc welding,such as transverse seam tracking and tracking for both high position and low position,a novel electromegnetic sensor based on the principle of inductance was designed,which can scan the welding grove by the primary coil magnetic field and the collected current signal can be processed to derive the welding torch deviation and adjust the slider level movement for coping with the sidewall fusion.Through the variation of the secondary coil induction electromotive force,the location of welding torch can be obtained. The real-time identification of the relative height deviation of the welding torch can be used to track the bidirectional weld movement quickly and smoothly by using PID algorithm processing. The developed sensor has a simple structure with high sensitivity and strong anti-interference ability,therefore it provides a new solution to the thick plate of narrow gap submerged arc welding tracking.