Sensitivity to High-Frequency Measurement Noise of Nonlinear High-Gain Observers Article Swipe

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Daniele Astolfi , Lorenzo Marconi , Laurent Praly , Andrew R. Teel ·

YOU? · · 2016 · Open Access · · DOI: https://doi.org/10.1016/j.ifacol.2016.10.274 · OA: W2561399519

This paper deals with the characterisation of the sensitivity to high-frequency measurement noise of nonlinear high-gain observers. The proposed tool provides bounds for the steady-state estimate in presence of noise when the high-gain parameter characterising the speed of convergence of the observer is fixed. The nonlinear analysis captures the effect of the noise frequency showing the "low-pass" filtering properties of the observer.