Moving horizon estimation of xenon in pressurized water nuclear reactors using variable-step integration
Résumé
A specific moving horizon estimation scheme is proposed for reconstructing the axial xenon concentrations
in pressurized water nuclear reactors (PWR). The model considered is continuous time, with a parsimonious spatial discretization. The estimation scheme involves continuous time integration while using low frequency sampling of measurements. The results support a sensitivity analysis. The quality of the estimation is shown to be good, even though the model is particularly stiff, and the implementation altogether light.
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