1. The main purpose of detecting the axial movement of weldments is to detect the position and direction of the axial movement of weldments. The methods of detecting weldments can be divided into two kinds: the side detection of cylinder wall and the end detection. However, the most widely used method should be the back detection. The common problem is that the end of weldments and the axial line are in the vertical direction. Because of the unevenness, it is necessary to process the measured end face of the weldment carefully.

2. The driving wheel can control the speed effectively. If we want to realize that the welding parts can be rotated steadily and steadily, we can adopt two different ways: first, DC speed regulation; secondly, AC frequency conversion speed regulation. These two different speed regulation methods have their own characteristics, but the latter is widely used, because this speed regulation method can be used. In order to meet the requirements of different tonnages of welded roller racks, and to ensure that the distance between the rollers between the welded roller racks is easy to adjust, and the combination is more convenient, the driving wheel can be used separately, which will be more convenient to use. However, the synchronization problem between the different driving wheels needs to be solved.

In fact, it is not effective to solve the faults of weldment movement only by means of fuzzy control. If the error of weldment end surface is greater than the accuracy of anti-channeling, then the computer will not be able to accurately calculate the amount of deviation, whether it is caused by the error of weldment end surface or by the axial movement of weldment, the most important thing is for different weldments. The errors in size and shape are also different.