螺旋焊管精焊机组驱动辊角度的自动控制

Study on the Automatic Closed-loop Control of the Driving Roller Angle in SAWH Pipe Two-step Welding Process

为了实现精焊机组驱动辊角度与焊枪跟踪滑板的闭环控制,提高钢管运行的稳定性及跟踪精度,利用从跟踪滑板采集的焊枪偏移信号,通过使用西门子PID控制块FB41对驱动辊角度进行比例积分控制,可实现驱动辊角度的定量调节,大大提高驱动辊角度的调节速度与调节精度,使焊枪跟踪焊缝时可以在滑板中点附近位置运行,从而保证焊缝的跟踪精度及焊接的稳定性,对有效提高精焊焊接质量有着重要意义。

In order to realize closed-loop control for finish welding unit driving roller angle and welding torch tracking skateboard, to improve the stability of the steel pipe running and tracking accuracy. Using welding torch offset signal from the racking skateboard to carry out proportional integral control for driving roller angle through control block FB41, which can realize quantitative regulation of driving roller angle, greatly improve the regulating speed and precision of the driving roller angle, make the welding torch run near the midpoint of the skateboard position during tracking weld, thus guarantee the weld seam tracking precision and welding stability, it has important significance for effectively improve finish welding quality.