Browsing by Author "Ighil Nessouk Rafik"

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    On observer-based differentiator design
    (FGEI.UMMTO, 2024-06-26) Ighil Nessouk Rafik
    Observer-based differentiators are model-based algorithms that estimate the derivatives of a measured time-varying signal, which are not available in some cases, for control use purposes. The following is a review of recent design techniques of observer-based differentiators. First of all, the design procedure of the high gain differentiator, which relies on a high-gain asymptotic observer is introduced. Then the finite time sliding mode differentiators are studied more particularly the Levant first and higher-order sliding modes differentiators. Finally the design process of prescribed-time sliding mode differentiators based on modulating functions is considered. Numerous simulation examples of the previously mentioned differentiators were conducted using MATLAB/Simulink to better illustrate the related theoretical results.