System identification of batch milk cooling using output error models

Agustriyanto, Rudy and Widianto, Aloisiyus Yuli and Purwanto, Edy and Setyopratomo, Puguh (2026) System identification of batch milk cooling using output error models. TELKOMNIKA Telecommunication Computing Electronics and Control, 24 (1). pp. 282-292. ISSN 1693-6930

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Abstract

Accurate modelling of milk cooling dynamics is essential to maintain product quality and improve energy efficiency in small-scale dairy operations. This study aims to develop a dynamic model for a batch milk-cooling system used at Koperasi Unit Desa Sinau Andandani Ekonomi (KUD SAE) Pujon. Synthetic temperature data were generated under controlled perturbations reflecting actual process conditions, and the data were analysed using the output error (OE) identification method implemented in the MATLAB System Identification Toolbox. Several OE model structures were compared using statistical indicators, including the coefficient of determination (R²) and root mean square error (RMSE). The OE (2,2,1) model achieved the best performance with R² = 0.9923 and RMSE = 0.0600, accurately representing the first-order dynamics of the cooling process. The identified model provides a reliable foundation for process optimisation, controller design, and operator training in dairy systems. Although the validation is limited to simulated data, the proposed approach offers substantial potential for real-time implementation and can be extended to other temperature-sensitive food processes.

Item Type:	Article
Uncontrolled Keywords:	Dairy automation Dynamic modelling Milk cooling Output-error method Process control System identification
Subjects:	T Technology > TP Chemical technology
Divisions:	Faculty of Engineering > Department of Chemical Engineering
Depositing User:	Rudy Agustriyanto, M.Sc 199005
Date Deposited:	30 Jan 2026 07:06
Last Modified:	30 Jan 2026 07:07
URI:	http://repository.ubaya.ac.id/id/eprint/50219

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