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

Robust Control and Its Application in the Tension Control of Cold Trandom

Author ChenYongJin
Tutor CiChunLing
School Yanshan University
Course Control Theory and Control Engineering
Keywords Robust Control H_ ∞ control Model matching Sensitivity Cold rolling mill Tension
CLC TP273.5
Type Master's thesis
Year 2002
Downloads 133
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Robust control theory research system parameter perturbations or outside interference exists when the system control problems, in particular, the uncertainty of the system model an impact on system performance systems control problem. Robust Control Based on the idea, discussed with reference to a number of domestic and international literature on the basis of robust control overall, and conducted in-depth from the basic principles of robust control, stage of development, controller design method. study and the results of the simulation. The robust H control applied to the actual control to make a certain amount of technical reserves. From control theory, design methods to the design method applied to the four-stand tandem cold rolling mill tension control system study of the whole process. Chapter Summary description of the robust control for object development status, achieved results and design methods. The second chapter analyzes the basic theory of robust control, different design requirements proposed control method can be converted to a standard H and H control The latest results of the theoretical research proved. Chapters III and IV are the focus of this study, analysis of three robust control methods in these two chapters detailed derivation method, direct design method for third-order system The method is simple, fast, and third-order system is suitable for parameter change in a small range. The second method obtained search α upper bound to arbitrary precision gamma iterative method, and in respect of T 3 = I, T 3 ≠ I algorithm and simulation studies, the results show that the control system of the controller determined by the algorithm is not sensitive to changes in the parameter. On the third method of a detailed analysis of the choice of the weighting function requirements, and according to this requirement is given a feasible way for selecting a weighting function. In the fourth chapter in the four-stand cold rolling mill tension to form part of the mathematical model are derived, and closed-loop tension control can be directly controlled object parameter choice, draw a link is formed based on the speed difference between the tension The variable parameter is the conclusion of the two. The final chapter in the application of the theory and design method of the preceding chapter four stand tandem cold rolling mill tension control system and the simulation and analysis.

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