一种基于弧长控制的摆动电弧焊缝跟踪偏差信号处理方法
Treatment Methods for Swing Arc Seam Tracking Error Signal Based on Arc-length Control
洪 波， 王 旭， 张淇淋， 祝团结
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作者单位：湘潭大学 机械工程学院，湖南 湘潭 411105
中文关键字：摆动电弧传感器； 焊缝跟踪； 弧长算法； 积分比较法； 信号处理
英文关键字：swing arc sensor; seam tracking; arc-length algorithm; integral comparison method; signal processing
中文摘要：针对目前常用提取偏差信息的左右积分比较法对V型不对称坡口不适用的情况，结合摆动电弧传感器低频率的特点，提出一种半周期单边积分比较法判断焊枪位置，并采用弧长控制的算法来提取偏差。经实验证明，半周期单边积分比较法用于低频率的摆动电弧传感器，解决左右积分比较法对V型不对称坡口存在的误判是可行的，跟踪效果良好。
英文摘要：The left-right integral comparison method, which is commonly used to extract deviation information, does not apply to asymmetric V-groove. Combining with the characteristics of low-frequency oscillating arc sensor, half-cycle integration of comparative law to judge sided gun position was presented and the arc-length control algorithm was used to extract the deviation. The results show that when unilateral half-cycle integral comparison method is used for the low-frequency oscillations arc sensors, the wrong justice caused by the unapplication of left-right integral comparison method in asymmetric V-groove can be solved and the tracking effect is good.