Wire feeder of four driveroll system is controlled bu welding power source with the advantages of stable feed speed, good start and brake characteristics, easy to move.
采用四轮驱动送丝机，受焊接电源控制，送丝稳定，启动，制动良好，维护方便。
2
The paper introduces some methods for diameter compute, velocity measurement, tension control, the same shaft series twice motors control and load balance control of twin driveroll.
介绍了卷径计算、线速度测量、张力控制、同轴串联双电机控制、上下辊负荷平衡控制方法。
3
Handling of these issues is a premise for the creation of SOX and the drive to roll specific practices related to codes of conduct into the reporting channel and oversight process.