Mold Level Stabilization of Continuous Steel Casting Systems Using a Variable Disturbance Observer

Autor:	Eun-Tae Jeung, Sung-Ha Kwon, Goo-Hwa Kim, Duk-Man Lee, Cheon-Don Son, Myung-Gong Sohn
Rok vydání:	2008
Předmět:	Engineering Disturbance (geology) business.industry Applied Mathematics Operating frequency medicine.disease_cause Variable (computer science) Control and Systems Engineering Control theory Casting (metalworking) Mold Disturbance observer medicine business Software Control methods Steel casting
Zdroj:	Journal of Institute of Control, Robotics and Systems. 14:105-110
ISSN:	1976-5622
DOI:	10.5302/j.icros.2008.14.2.105
Popis:	This paper presents a control method to maintain stable mold level for unsteady bulging in high speed casting. The stabilizing mold level is an important factor to get high quality products. But, for various reasons, there are several disturbance factors which make mold level unstable. Bulging is one of disturbance factors and considered for the current stage of study. We design a disturbance observer to attenuate the effect of bulging which is periodic mold level disturbance. Since the period of bulging varies with the casting speed, the parameters of disturbance observer are changed by the casting speed. Simulation is illustrated to demonstrate stable performance of the proposed method in comparison with a previous method in a variable operating frequency.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6ed34f05a833b3429c93ca2ce12843b4 https://doi.org/10.5302/j.icros.2008.14.2.105 Zobrazit plný text záznamu