Neural Luenberger state observer for nonautonomous nonlinear systems

Fuente: arXiv
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Hauptverfasser: Woelk, Moritz, Morris, Jarod, Tang, Wentao
Format: Preprint
Veröffentlicht: 2026
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author Woelk, Moritz
Morris, Jarod
Tang, Wentao
author_facet Woelk, Moritz
Morris, Jarod
Tang, Wentao
contents This work proposes a method for model-free synthesis of a state observer for nonlinear systems with manipulated inputs, where the observer is trained offline using a historical or simulation dataset of state measurements. We use the structure of the Kazantzis-Kravaris/Luenberger (KKL) observer, extended to nonautonomous systems by adding an additional input-affine term to the linear time-invariant (LTI) observer-state dynamics, which determines a nonlinear injective mapping of the true states. Both this input-affine term and the nonlinear mapping from the observer states to the system states are learned from data using fully connected feedforward multi-layer perceptron neural networks. Furthermore, we theoretically prove that trained neural networks, when given new input-output data, can be used to observe the states with a guaranteed error bound. To validate the proposed observer synthesis method, case studies are performed on a bioreactor and a Williams-Otto reactor.
format Preprint
id arxiv_https___arxiv_org_abs_2602_24252
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Neural Luenberger state observer for nonautonomous nonlinear systems
Woelk, Moritz
Morris, Jarod
Tang, Wentao
Systems and Control
This work proposes a method for model-free synthesis of a state observer for nonlinear systems with manipulated inputs, where the observer is trained offline using a historical or simulation dataset of state measurements. We use the structure of the Kazantzis-Kravaris/Luenberger (KKL) observer, extended to nonautonomous systems by adding an additional input-affine term to the linear time-invariant (LTI) observer-state dynamics, which determines a nonlinear injective mapping of the true states. Both this input-affine term and the nonlinear mapping from the observer states to the system states are learned from data using fully connected feedforward multi-layer perceptron neural networks. Furthermore, we theoretically prove that trained neural networks, when given new input-output data, can be used to observe the states with a guaranteed error bound. To validate the proposed observer synthesis method, case studies are performed on a bioreactor and a Williams-Otto reactor.
title Neural Luenberger state observer for nonautonomous nonlinear systems
topic Systems and Control
url https://arxiv.org/abs/2602.24252