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Inverse optimal neural control via passivity approach for nonlinear anaerobic bioprocesses with biofuels production. (English) Zbl 1425.92071

Summary: This paper proposes an inverse optimal neural control method of a nonlinear anaerobic bioprocesses model for simultaneous hydrogen and methane production in presence of disturbances. Based on the fundamental properties of the system, a passivity approach is designed such that asymptotic stability is guaranteed. A recurrent high-order neural network for unknown nonlinear systems in presence of unknown bounded disturbances and parameter uncertainties is proposed to identify nonmeasurable state variables of the system, which are directly related to biofuels production. Optimal control laws based on the neural model are proposed so that the passivation of the entire plant is preserved. The neural control strategy performance for trajectory tracking in presence of disturbances is proven. Results via simulation show the optimal control methodology efficiency to stabilize the \(\text{H}_2\) and \(\text{CH}_4\) productions along desired trajectories even in presence of disturbances.

MSC:

92C40 Biochemistry, molecular biology
49N90 Applications of optimal control and differential games
93C10 Nonlinear systems in control theory
93D20 Asymptotic stability in control theory
Full Text: DOI

References:

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