Design And Research Of Intelligent Control System For Paper-Making Reconstituted Tobacco

Smoking is harmful to health. But tobacco is closely related to public life, it has an immeasurable impact to the development of the national economy. Tobacco sheet, which is called reconstituted tabacco in academic, refers to employing tobacco stems, debris and spices, in order to change the physical and chemical properties of cigarettes, in the process of cigarette production. In this way, we can effectively reduce the tar content in tobacco leaves, improve the taste of cigarettes, control the combustion rate. And the most important is that we can enjoy better life with the technology. Current best manufacturing methods for reconstituted tobacco is the way of through papermaking. This method can not only extract the active ingredients from the tabacco leaves and stems, but also be able to change the ratio of raw materials according to the technical requirements, to produce cigarette products with various aroma. It is a green high-tech, accompanied by major economic and social benefits.With the great development of the industry, traditional modes of production has been unable to meet the expanding market demand. The article, based on practical projects, considering the whole condition of the business, according to the design principle which says "centralized control, decentralized management and global monitoring", making comprehensive use of current advanced control skills, designs and researches the intelligent control system of the production line for the paper-making reconstituted tobacco. By doing this, we want to guarantee safety and improve efficiency in the production process.With the fully learning of the process for paper-making reconstitued tobacco, fieldbus technology is proposed to the basic structure for the system's overall design concept. We use Rockwell's automatic controller to build the whole system in the NetLinx open network. Distributed devices are connected to the controllers, using devicenet. Effective message is running with a high speed between controlles, benefitting from controlnet. And the whole information is transported to the manager's office through ethernet. We write comprehensive control program under the software named RSLogix 5000. RSLink software realizes the communication between devices and host computers. RSNetWorx works for the whole unified network planning. We use iFIX, as the configuration software for OPC server and client in the industrial computer to create the beautiful, humanized, moniotring control pictures in iFIX by exploting VBA script and COM components. Above all, we build a SCADA system using all these means.The are many applications for electronic belt scales in the production line. A good electonic belt scale system can ensure the right ratio of the raw materials and the quantity of products. In order to measure more accurately, we use the control strategy, which combines the traditional PID control technology with the modern fuzzy control theory, to design the system. The PID control system has good robustness, and it's used in many control occasions, fuzzy technology overcomes the weakness of some object cannot be able to build an accurent model. And now, we use Fuzzy adaptive PID to control the electronic belt scales system online.The acpects of the production line coordinate with each other. The system takes the programmable controller as the brain of system, cables as the blood circulation system, field sensors as perceptual system, various implementing agencies, motors as motion system. Neural network system is built by fieldbus technology. Programming software, communication software and network configuration software give the soul to the production system. Configuration operating pictures set up a bridge between the devices and the managers.Since the system has been put into used, it works well to meet the requirements of the production process. And now, tons of the tobocco sheets are daily produced, to be sold throughout the country and even to foreign countries. There is a growing number of cigarettes, mixing against reconstituted tobacco prouducts. We sincerely hope the future of the domestic paper-making reconstituted tobacco to be much better.