Synergistic fusion of physical modeling and data-driven approaches for parameter inference to enzymatic biodiesel production system

Yu Chen, Hui Yu, Chengjie Liu, Jin Xie, Jun Han and Houde Dai

Applied Energy, 2024, vol. 373, issue C, No S0306261924012571

Abstract: Enzymatic biodiesel production systems represent complex chemical dynamical processes that traditional modeling approaches struggle to effectively capture the inherent nonlinearity and dynamics. We propose a novel framework that fuses prior physical knowledge and data-driven methods to enhance parameter inference capabilities for such systems. Grounded in the concept of physics-informed machine learning (PIML), we combine the prior knowledge from traditional physical models with the powerful approximation abilities of data-driven neural networks. This framework enables the physical laws to guide the training of the data-driven model while utilizing data to correct model biases, achieving tight integration of physical constraints and data-driven approaches in the modeling process. To address potential challenges faced by PIML methods in practical applications, such as multiscale features and violations of time causality, we introduce several improved strategies. Evaluating our framework on real experimental data from biodiesel production, we validate its accurate estimation of system parameters. This work provides a promising new approach to enhance the interpretability and generalization of data-driven modeling by incorporating prior physical knowledge, holding potential applications in modeling and control of complex dynamical systems.

Keywords: Parameter inference; Biodiesel production; Physics-informed; Data-driven; Time causality; Multiscale (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1016/j.apenergy.2024.123874

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