摘要
铝罐车、钢结构以及造船等行业中工件体积大、焊缝长,焊接过程中需要频繁移动送丝机或者焊接电源才能完成焊接作业。针对该问题为扩展焊接作业半径,减少移动送丝机和焊接电源的次数,研究了双电机远距离送丝控制系统,系统包含拉丝电机和推丝电机。为使两电机能够实现良好的同步性能,分析了现有多电机的控制策略,选取了适合双电机的交叉耦合控制方式,将拉丝电机与推丝电机的转速差作为耦合控制变量。引入焊接电弧电压和转速差作为拉丝电机转速的调整变量,推丝电机转速的调整变量使用转速差和电机电流的变化量,利用高精度激光测速仪在送丝电缆15 m的条件下,对不同送丝速度下的转速进行长时间测试,测试过程中未发生焊丝堆集现象,采集的送丝速度反馈值与设定值的偏差小于0.2 m/min,满足使用要求。
In industries such as aluminum tank trucks,steel structures and shipbuilding,the workpiece is large and the weld seam is long,and the welding process requires frequent movement of the wire feeder or welding power supply to complete the welding operation.In order to expand the radius of welding operation and reduce the mobile wire feeder and welding power supply,a two-motor long-distance wire feeding control system was studied,including a wire drawing motor and a wire pushing motor.In order to achieve good synchronous performance of the two motors,the control strategy of the existing multi-motor was analyzed,and the cross-coupling control method suitable for the dual motors was selected,and the speed difference between the wire drawing motor and the wire pushing motor was used as the coupling control variable.The welding arc voltage and speed difference were introduced as the adjustment variables of the speed of the wire drawing motor,and the adjustment variables of the speed of the push motor using the speed difference and the change of the motor current,and the high-precision laser velocimeter was used to test the speed of different wire feeding speeds for a long time under the condition of 15 meters of the wire feeding cable,and the phenomenon of welding wire stacking does not occur during the test,and the deviation between the collected wire feeding speed feedback value and the set value is less than 0.2m/min,which meets the requirements of use.
作者
苏立虎
SU Lihu(Panasonic Welding Systems(Tangshan)Co.,LTD.,Tangshan Hebei 063020,China)
出处
《微电机》
2024年第7期43-48,72,共7页
Micromotors
关键词
拉丝
推丝
电机
同步
远距离
pull wire
push wire
motor
synchronous
long distance
