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Conference Papers Year : 2014

Stability of a Nonlinear Moving Horizon Estimator with Pre-Estimation

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Abstract

In this paper, a Moving Horizon Estimator with pre-estimation (MHE-PE) is proposed for discrete-time nonlinear systems under bounded noise. While the classical Moving Horizon Estimator (MHE) compensates for model errors by estimating the process noise sequence over the horizon via optimization, the MHE-PE does it using an auxiliary estimator. The MHE-PE is shown to require significantly less computation time compared to the MHE, while providing the same order of magnitude of estimation errors. The stability of the estimation errors of the MHE-PE is also proven and an upper bound on its estimation errors is derived. Performances of the MHE-PE is illustrated via a simulation example of pressure estimation in a gas-phase reversible reaction.
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Dates and versions

hal-00961333 , version 1 (19-03-2014)

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Rata Suwantong, Sylvain Bertrand, Didier Dumur, Dominique Beauvois. Stability of a Nonlinear Moving Horizon Estimator with Pre-Estimation. 2014 American Control Conference, Jun 2014, Portland, Oregon, United States. ⟨10.1109/ACC.2014.6859072⟩. ⟨hal-00961333⟩
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