Piecewise Polynomial Model Identification using Constrained Least Squares for UAS Stall
| Autor: | Mathieu Brunot, Vincent Guibert, Jean-Philippe Condomines, Murat Bronz |
|---|---|
| Přispěvatelé: | Ecole Nationale de l'Aviation Civile (ENAC), ONERA / DTIS, Université de Toulouse [Toulouse], ONERA-PRES Université de Toulouse |
| Rok vydání: | 2021 |
| Předmět: |
020301 aerospace & aeronautics
0209 industrial biotechnology Computation Stall (fluid mechanics) 02 engineering and technology Aerodynamics Unmanned aircraft system [SPI.AUTO]Engineering Sciences [physics]/Automatic Stall modelling Constrained least squares Nonlinear system 020901 industrial engineering & automation Polynomial and rational function modeling 0203 mechanical engineering Flight envelope Control and Systems Engineering Control theory Piecewise polynomial Piecewise Flight dynamics identification Wind tunnel Mathematics |
| Zdroj: | 19th IFAC Symposium on System Identification 19th IFAC Symposium on System Identification, Jul 2021, Padova (virtual), Italy |
| ISSN: | 2405-8963 |
| Popis: | International audience; In this paper, we propose a new piecewise polynomial model (PwPM) for the modelling of an Unmanned Aircraft System (UAS) aerodynamic coefficients over a wide flight envelope, where they are characterized by nonlinear and hysteresis phenomena. An associated identification method using Constrained Least Squares (CLS) is then presented and successfully applied to experimental data obtained from wind tunnel measurements. The resulting fitting is finally compared with the similar piecewise models PWPFIT and AERODAS, showing a greater precision in its modelling, while maintaining their relative simplicity and computation performance. |
| Databáze: | OpenAIRE |
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