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Decoupling and Fuzzy Control of MIMO System for Hot Strip Rolling Mill

Author: LiuYuanGang
Tutor: HanJinï¼›ZhouYaoZhong
School: Shandong University of Science and Technology
Course: Computer technology
Keywords: Finishing looper control Decoupling control Fuzzy Control
CLC: TP273.5
Type: Master's thesis
Year: 2005
Downloads: 366
Quote: 1
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Abstract


With the rapid development of modern industrial technology , varieties , specifications , quality and production requirements of the strip has been increasing . Looper control the hot-rolling process is to determine the key technologies of the quality of the strip thickness and width , the technology has been in active development at home and abroad . The hot rolling finishing mill control system of the plant based the Laigang in broadband digital transformation project , the computer control system for such research, especially for the hot strip mill control process Looper tension and a high degree of control made ??a more comprehensive and in-depth study , completed a large number of theoretical and practical work . First on the basis of analysis and comparison at home and abroad in recent years for various control programs and theoretical looper control system analysis , use six strip mill looper control system mathematical model , taking into account the hot strip mill site equipment and personnel conditions decouple the multi - variable coupling system for looper control the tension and height of the system , and then two single variable input and output control system integrated use of fuzzy control with traditional PID control combined program . Finally, a computer simulation using Matlab Simulink . The control method of the actual control data obtained through simulation obvious advantages compared with conventional control scheme . Have certain guiding significance for the design and implementation of the actual control system . In addition , site commissioning process using the looper position detection technology of automatic zeroing to reduce interference error detection looper ; the AGC control theory to achieve control of the rear rack compensation ; using l sets to advance into sets high closed loop to solve the problem of soft contact ; liter units which the main speed adaptive way off the set of control ; the additional integral controller to solve the mechanical characteristics of the last stand of the finishing mill softening drawn steel phenomenon caused , made ??very good control effect by field technicians and operations workers generally welcomed and praise . The conclusions of this study at the production site , all requirements of the type of evaluation board with more than required to achieve technical indicators , and achieve good economic results provide a reliable basis for the enterprise .

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Automatic control,automatic control system > Computer control, computer control system
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