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| Decoupling Control Strategy for the AGCLP System |
| QU Lei，WANG Jing，ZONG Shengyue |
| National Engineering Research Center of Advanced Rolling Technology, University of Science and Technology Beijing, Beijing 100083, China |
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Abstract Aiming at improving the gauge control affected by the tension disturbance in hot strip finishing mills, a multivariable strong coupled AGCLP nonlinear model was established by analyzing the interaction of the gauge control system and the looper system to present a decoupling control strategy of inverse system theory. Demonstrating the inversion of AGCLP system and building the inverse system, the nonlinear system could be decoupled to a pseudo linear system, then, a decoupling controller was designed by linear control theory to complete the decoupling of multivariable nonlinear AGCLP system. The simulation results showed the validity of the model and feasibility of inverse control strategies.
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Received: 01 January 1900
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2008, Vol. 43 
