Resistance to Noise of Non-linear Observers in Canonical Form Application to a Sludge Activation Model

Benoit Schwaller, Denis Ensminger, Birgitta Dresp-Langley, Jose Ragot


The aim of this study was to increase the resistance to noise of an observer of a non-linear MISO system transformed into canonical regulation form of order $n$. For this, the principle idea was to add $n$ observers on the output equations of the main observer. By adjusting the time scale of the output observers, the resistance to noise of the final estimates is considerably increased. The proposed method is illustrated by model simulations based on a non-linear Sludge Activation Model (SAM)

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Journal of Mathematics Research   ISSN 1916-9795 (Print)   ISSN 1916-9809 (Online)

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