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Zhangjiagang 1422 cold strip mill hydraulic AGC and electrical drive systems transformation projects as the background for its speed tension system overall mechanism modeling , analysis and controller design and test . With the rolling technology trends continuous , high-speed , automated , high-precision development , need higher performance speed tension system , however , reversible cold rolling mill speed tension system is a multi- variable coupling system , but also by the system uncertainty and interference the impact . Therefore , its robust control and distributed control study was one of the hot rolling control research in the field . Firstly, under the tension generated model DC motor model , the front slide and the rear slip model , and the structural characteristics of the system , the establishment of speed tension system nonlinear , multi-variable , the coupling mechanism of mathematical models . Secondly, it has been established on the basis of mathematical models , respectively, for 1422 reversible cold strip mill speed tension system design indirect tension control algorithm and direct tension closed-loop controller . Then , for the speed tension system uncertainty and interference suppression , speed tension robust controller based on the H ∞ mixed sensitivity design method , design , and improve system robustness and interference suppression ; coupling system for speed tension , from the point of view of the system architecture , the application system contains the principle , combined with distributed control technology and optimal controller design methods , design of integral quadratic (LQ) optimal decentralized controllers , weakening the coupling of the system , eliminating the system static poor. Finally, the combination of the 1422 cold strip mill hydraulic AGC and electrical drive systems transformation project , part of the Experimental Study of speed tension control system . Mill speed control and winder indirect tension control system on the basis of the existing hard even the composition and communication networks , general debug and parameters optimization test , the test results show that , after the transformation , the speed of the tension control system can satisfy the scene production requirements .
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