1. The present Spinnery was the local retail outlet for the fine woven and embroidered work.

2. The building of the former Yihe Spinnery in Shanghai is a protective historical building. To ensure its serviceability, appropriate retrofit is necessary.

3. People who don't work in a spinnery mostly have no idea about doffing.

4. The proposed scheme may be widely suitable for electrical motor synchronization control demands arising from the spinnery, paper mill and mechanical production lines.

5. The design in this paper comes from a practical project of a spinnery. Our design and control object is the electrical spindle motor of weaving producing process.

6. Introduces a kind of software generating method of a large image knocking from divided piece scanning images. The method has been used in spinnery and has obtained a good benefit.