Robust stability analysis of the hot-dip galvanising control system Online publication date: Mon, 11-Jun-2007
by Gerardo Romero, Luis Garcia, Irma Perez, Rene Dominguez, Marco A. Panduro, Aldo Mendez
International Journal of Automation and Control (IJAAC), Vol. 1, No. 2/3, 2007
Abstract: This paper presents new results to compute the robustness margin of the hot-dip galvanising control system. Compared to previous works on this issue, this paper considers a mathematical model of the plant with two inputs and one output. The inputs are used to regulate the output, which represents the Zinc mass coating of steel strip. To achieve this objective, a multivariable PI controller is used, this controller is tuned applying the well known Ziegler and Nichols method, and then the maximum parametric uncertainty is computed in order to guarantee the stability property of the closed-loop control system. The work bases its results on the value set characterisation for interval plants with uncertain time delay, along with the use of the zero exclusion principle. Both results allow to transform the original robust stability problem into a simple visual inspection of a computer aided built graph.
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Automation and Control (IJAAC):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com
Our Blog 
Follow us on Twitter 
Visit us on Facebook