Analysis And Design Of Electric Control Systems For Sectional Driving Of Web Flexo Slitter And Linkage Line

Development goals of linkage line were to enhance efficiency, reduce the labor intensity and improve product quality. It represents the printing machinery, information technology and level of automation. Electric control systems are the carrier of the application of information technology applications. To improve the level of information intelligence of electric control systems is currently an important development in the printing machinery.This thesis analyzes the problems of Flexo Wire Side-stitching Line, produced by a company of Zhejiang, to improve design, including driving, tension of unwind and human-computer interface. Then, it proposes improved design. Printing linkage line with conjunct axis is inefficient in conjunct axis transmission mode. It is low in efficiency, easy to wear, hard to adjust the specifications and operate at a high speed. To solve above-mentioned deficiency, one refer to sectional driving of paper machine, and alter the configuration of machine, simultaneity apply electric technology. Sectional driving simplify machine configuration, it use transducer as main electric component to drive every section of machine synchronization running. As paper reel is heavy and the range of traction moment-of-inertia is larger, tension of unwind unit of printing linkage line is difficult to control. Considering the analog PID is difficult to meet the requirements of control, and parameter tuning is a difficult task, make PID controller digital and Add functionality of parameters self-tuning. As the original system human-computer interface is overly simple and single function, the new design of human-computer equivalent to an information management system with database. The main research contents and results are as follows:1. This thesis analyzes the problems in the original system, proposed to improve the design. 2. For the driving issue, the sectional driving applied to the system drive. The thesis gives a division of Linkage-line configuration of each cell, puts forward the requirements of division drive control, and analyzes the theory of sectional driving for linkage line. The software and hardware design of sectional driving is introduced.3. As to the problem of tension control of unwind, the original analog PID tension control system digitally to improve the design and increase the self-tuning capabilities without changing the mechanical structure of the case. In this thesis, a digital PID tension control electrical control theory, hardware design and software implementation methods are given. Raised tension control auto-tuning of the implementation principle and gives the specific methods and detailed software design.4. For man-machine interface problems, database design, some of the ideas will be applied to human-computer interface design. Man-machine interface design of the system is analyzed, various types of data and information related to the relationship between the systems are given, man-machine interface design, overall program, and on the touch-screen menu design is explained.5. Finally, this thesis draws some conclusions, and presents some issues for future research.