2020 | vol. 68 | nr. 4 | art. 11

Computer-Added System Selecting the Sub-Optimal Model of the Control Object

Krzysztof S. KULA, Mostefa MOHAMED-SEGHIR
This paper presents a project of a computer-added system that supports the work of autonomous control loops by performing an identification test. The purpose of this test is to automatically create the best possible in terms of the assumed criterion plant model, of which no a priori knowledge is required, and then, on the basis of this model, to adjust the relevant controller or to incorporate it into the structure of the supervised control system. It is not the human being who decides whether a model belongs to a particular category, but the system automatically. When constructing the transfer function models, the analysis of the response shape of the object was carried out, and the Åström-Hågglund method was used to determine their parameters. The paper presents a brief description of the measurements carried out and the dependencies used to calculate the required parameters of various models. Simulation of relay tests was conducted and their results in the form of a table were attached to the article.
Keywords: Limit cycles, Relay feedback test, Auto-tuning, Model identification
To cite this article: KULA K.S., MOHAMED-SEGHIR M. “Computer-Added System Selecting the Sub-Optimal Model of the Control Object”, in Electrotehnica, Electronica, Automatica (EEA), 2020, vol. 68, no. 4, pp. 80-89, ISSN 1582-5175.