Abstract
This entry deals with a class of nonlinear high-gain observers referred to as “low-power” due to the fact that the high-gain parameter is powered only up to 2 regardless of the dimension of the observed system, on the contrary of conventional high-gain observers in which the high-gain parameter is powered up to the dimension of the observed system. This kind of observers preserves the main properties of conventional high-gain observers in terms of tunability of the speed of convergence and robustness to exogenous disturbances, by outperforming those in terms of numerical implementation and sensitivity to high-frequency measurement noise. The drawback of low-power high-gain observers over the conventional ones is given by the dimension of its dynamics that is larger.
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Astolfi, D., Marconi, L. (2020). Low-Power High-Gain Observers. In: Baillieul, J., Samad, T. (eds) Encyclopedia of Systems and Control. Springer, London. https://doi.org/10.1007/978-1-4471-5102-9_100070-1
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DOI: https://doi.org/10.1007/978-1-4471-5102-9_100070-1
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