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Design of Rolling State Observers for Application to Control of Thickness and Tension in Rolling Mills

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Author(s): Hamid R. Koofigar | Shahab Amelian

Journal: Research Journal of Applied Sciences, Engineering and Technology
ISSN 2040-7459

Volume: 3;
Issue: 9;
Start page: 1052;
Date: 2011;
Original page

Keywords: Estimation error | feedback control | mathematical model | rolling mill | state observer

ABSTRACT
This study focuses on the necessity of designing state observers to be used in controller synthesis for rolling processes. This is motivated by the fact that using several kinds of sensors for measuring all of process variables is technically and economically avoided. On the other hand, using exact measurement in feedback control systems could considerably improve the quality of products. In other word, there is a trade-off between high quality and the implementation limitations, managed here by developing rolling state observers. The proposed observers estimate the states not measured directly by the installed sensors. This technique is applicable to both hot rolling and cold rolling processes. Simulation results demonstrate the performance of the proposed estimation algorithm.
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