Research Of Distribute Control System For Cement Mill

With the developing of Distributed Control System,it plays a more important role in cement automatic production than ever. This paper discusses the structure and control principle of cement factory distributed Control system,it analyzed and compared load control and fieldbus and logic control and belt weight meter detailed. This system combined modernistic technology with the traditional industry very much ,make some performance of the system higher than others.Most of advanced,profibus is used field communication. Not only save investment,but also be more quickly at engineering install. Detailed introduce is made on the field bus technology.The load of mill is controlled by the power lift and feedback of cement. The result is good.Belt weight meter is directly controled by PLC,measuring meter is not need any more. So reliability of system is higher. It's move agility for automatic calibration to zero and parameter.A new technology is adopted to access anolog signal that eliminate non-standard item.A simple and useful programming method is adopted to controlling cement mill system,sequence controlling. It can be completely used at genrally controlling of automatic product line.