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Manis O, Skoumperdis M, Kioroglou C, Tzilopoulos D, Ouzounis M, Loufakis M, Tsalikidis N, Kolokas N, Georgakis P, Panagoulias I, Tsolkas A, Ioannidis D, Tzovaras D, Stankovski M. Data-Driven AI Models within a User-Defined Optimization Objective Function in Cement Production. SENSORS (BASEL, SWITZERLAND) 2024; 24:1225. [PMID: 38400383 PMCID: PMC10892291 DOI: 10.3390/s24041225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 02/05/2024] [Accepted: 02/09/2024] [Indexed: 02/25/2024]
Abstract
This paper explores the energy-intensive cement industry, focusing on a plant in Greece and its mill and kiln unit. The data utilized include manipulated, non-manipulated, and uncontrolled variables. The non-manipulated variables are computed based on the machine learning (ML) models and selected by the minimum value of the normalized root mean square error (NRMSE) across nine (9) methods. In case the distribution of the data displayed in the user interface changes, the user should trigger the retrain of the AI models to ensure their accuracy and robustness. To form the objective function, the expert user should define the desired weight for each manipulated or non-manipulated variable through the user interface (UI), along with its corresponding constraints or target value. The user selects the variables involved in the objective function based on the optimization strategy, and the evaluation is based on the comparison of the optimized and the active value of the objective function. The differential evolution (DE) method optimizes the objective function that is formed by the linear combination of the selected variables. The results indicate that using DE improves the operation of both the cement mill and kiln, yielding a lower objective function value compared to the current values.
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Affiliation(s)
- Othonas Manis
- Titan Cement Group, 11143 Athens, Greece; (O.M.); (P.G.); (I.P.); (A.T.)
| | - Michalis Skoumperdis
- Centre of Research & Technology—Hellas (CERTH), Information Technologies Institute, 57001 Thessaloniki, Greece; (C.K.); (D.T.); (M.L.); (N.T.); (N.K.)
| | - Christos Kioroglou
- Centre of Research & Technology—Hellas (CERTH), Information Technologies Institute, 57001 Thessaloniki, Greece; (C.K.); (D.T.); (M.L.); (N.T.); (N.K.)
| | - Dimitrios Tzilopoulos
- Centre of Research & Technology—Hellas (CERTH), Information Technologies Institute, 57001 Thessaloniki, Greece; (C.K.); (D.T.); (M.L.); (N.T.); (N.K.)
| | - Miltos Ouzounis
- Centre of Research & Technology—Hellas (CERTH), Information Technologies Institute, 57001 Thessaloniki, Greece; (C.K.); (D.T.); (M.L.); (N.T.); (N.K.)
| | - Michalis Loufakis
- Centre of Research & Technology—Hellas (CERTH), Information Technologies Institute, 57001 Thessaloniki, Greece; (C.K.); (D.T.); (M.L.); (N.T.); (N.K.)
| | - Nikolaos Tsalikidis
- Centre of Research & Technology—Hellas (CERTH), Information Technologies Institute, 57001 Thessaloniki, Greece; (C.K.); (D.T.); (M.L.); (N.T.); (N.K.)
| | - Nikolaos Kolokas
- Centre of Research & Technology—Hellas (CERTH), Information Technologies Institute, 57001 Thessaloniki, Greece; (C.K.); (D.T.); (M.L.); (N.T.); (N.K.)
| | | | - Ilias Panagoulias
- Titan Cement Group, 11143 Athens, Greece; (O.M.); (P.G.); (I.P.); (A.T.)
| | - Alexandros Tsolkas
- Titan Cement Group, 11143 Athens, Greece; (O.M.); (P.G.); (I.P.); (A.T.)
| | - Dimosthenis Ioannidis
- Centre of Research & Technology—Hellas (CERTH), Information Technologies Institute, 57001 Thessaloniki, Greece; (C.K.); (D.T.); (M.L.); (N.T.); (N.K.)
| | - Dimitrios Tzovaras
- Centre of Research & Technology—Hellas (CERTH), Information Technologies Institute, 57001 Thessaloniki, Greece; (C.K.); (D.T.); (M.L.); (N.T.); (N.K.)
| | - Mile Stankovski
- Faculty of Electrical Engineering and Information Technologies, Cyril and Methodius University, 1000 Skopje, North Macedonia;
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