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Modeling and gain scheduling adaptive control of tension control system for continuous annealing process

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5 Author(s)
Qiang Liu ; Key Laboratory of Integrated Automation of Process Industry (Northeastern University), Ministry of Education and Research Center of Automation, Northeastern University, Shenyang, China ; Tianyou Chai ; Lijie Zhao ; Yingwei Zhang
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In continuous annealing process, strip tension is an important factor that decides whether the continuous annealing line could work steadily and promptly or not. However, the tension fluctuations are inevitable as the continuous annealing process requires accelerating and decelerating frequently. In this situation, the synchronous response of the roll-speed helps to reduce this type of tension fluctuations. So here, based on the developed object model close to the actual process, a new adaptive control method with two compensations, feedforward compensation and gain scheduling adaptive compensation has been proposed to compensate the axletree friction and the strip inertia's influences to the tension control respectively. The simulation and application results show that this method is helpful to restrain the tension fluctuations caused by the mismatch of the adjacent roll speed, and is beneficial to the stability of tension control.

Published in:

Decision and Control, 2009 held jointly with the 2009 28th Chinese Control Conference. CDC/CCC 2009. Proceedings of the 48th IEEE Conference on

Date of Conference:

15-18 Dec. 2009