Piecewise Polynomial Model Identification using Constrained Least Squares for UAS Stall. Issue 7 (2021)

• Record Type: Journal Article
• Authors: Guibert, Vincent; Condomines, Jean-Philippe; Brunot, Mathieu; Bronz, Murat
• Is Part Of: IFAC-PapersOnLine. Volume 54:Issue 7(2021)
• Page Start: 493
• Page End: 498
• Publication Date: 2021
• Subjects: Flight dynamics identification -- Piecewise polynomial -- Constrained least squares -- Unmanned aircraft system -- Stall modeling; Automatic control -- Periodicals; 629.805
• DOI: 10.1016/j.ifacol.2021.08.408
• Languages: English
• ISSNs: 2405-8963

Abstract

Abstract: 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.