Título: Non-Linear Control Strategy For Strip Casting Processes
Autores: Oliveira, V. A.; Nascimento, R. R.; Arrifano, N. S. D.; Gesualdo, E.; Tosetti, J. P. V.
Resumo: This paper present a non-linear control strategy to regulate the molten steel level of a strip-casting process. The molten steel level along with the separation force is considered the most critical to the production of high quality steel strips. The molten steel level may be controlled using the tundish output flow or the casting speed. However, the casting speed is usually used to control the roll force separation. To improve the strip thickness uniformity, we propose the introduction of an intermediary tundish submerse into the pool between the rotating rolls. The molten steel level is thus controlled by the intermediary tundish output flow. In this paper, we consider a feedback linearization controller with a selective fuzzy control law for model-estimation error compensation. Stability analysis of the fuzzy Mamdani controller using the Lyapunov direct method is also included. Simulation results are presented considering the real system parameters and both the stopper actuator dynamics and the rolling mill DC motor dynamics. For comparison we include results with the conventional PID.
Palavras-chave: Strip-casters; twin roll; feedback linearization; fuzzy control; Mamdani models
Páginas: 13
Código DOI: 10.21528/lmln-vol1-no2-art2
Artigo em PDF: vol1-no2-art2.pdf
Arquivo BibTex: vol1-no2-art2.bib