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

Tobacco sheet is a kind of reconstituted tobacco, which is made of many materials, such as tobacco stems leavies and spices. It can change the physical and chemical properties of cigarettes artificially, and reduce the contents of tar, thereby we can lessen the harmful substances effectively which come from smoking. Nowadays, one of the best methods to manufacture reconstituted tobacco is by papermaking. It can extract the active ingredients of tobacco stems and leaves, by means of soaking, grinding and so on. Cigarette products can also be produced with different aroma through changing the ratio of raw materials. It can bring great benefit to the economy and society.With the high development of automatic producing industry, the demand for tobacco sheet production increases day by day. So it is necessery to inquiry and reconstruct the existing producing line to ensure the safety of production, save energy, reduce emissions, improve the efficiency of production. This subject is based on an actual project with the principle of "centralized management, decentralized control". This paper makes a comprehensive research on the related profession, and designs the automatic control and information integration system by combining many advanced techniques for industry contro.Under the premise of full analysis and understanding of the principle of tobacco sheet production process, this paper presents building SCADA system design ideas based on field bus technology. Logix5000series of American rockwell (AB) was chosen as the PLC controller., and on the basis of NetLinx open network, distributed equipment (frequency converter, soft starter, field intelligent instrument, the Sub-station, etc.) and the controller were connected to the DeviceNet network to complete the control command and information transmission, different controllers were connected to the ControlNet network to complete efficient information transmission, integrated management of the entire system was achieved in the form of Ethernet/IP at last. Using a dedicated RSLogix5000programming software to write perfect PLC control program and the hardware configuration; through communication software RSLinx, completed the communication of the PLC with the host computer; using network configuration software of the RSNetWorxto plan and configurated the network system; the iFIX configuration software of GE FANUC company was chosen as the upper computer to work as the client and server, and using its Script editor and OPC function to draw humanized operation and monitoring interface, statements, alarm and other functions by calling the COM component.This paper uses the tobacco sheet automatic production line as the research object, studied the automation control strategies of each step of the process, and adapted advanced network communication technology, fieldbus technology, fuzzy control technology, intelligent detection technology, video monitoring technology, computer technology, combing programmable controllers, intelligent instruments, electrical frequency control of motor speed control, upper monitor configuration as a whole, implemented automatic control of the paper-making reconstituted tobacco production line and information integration system.Through improving and completing the automation control of the original production process, current production line can run smoothly, the whole production line operation speed is improved, the product quality can meet the process requirements. Not only the working environment of workers and production efficiency are improved but also reduce production costs, improve the level of automation of the production line to achieve the purpose of energy saving. Through researching the automatic control and information integration system of the tobacco sheet production line, this program can provide theoretical basis and technical support of automated production for the reengineering of tobacco leaf production enterprise, and also can be used as a technical reference to the similar or the related industry to improve the production efficiency and the production environment.