Pitch-Axis Identification for a Guided Projectile Using a Wind-Tunnel-Based Experimental Setup

Guillaume Strub (1, 2) , Simona Dobre (2) , Vincent Gassmann (2) , Spilios Theodoulis (2) , Michel Basset (1)

1 MIPS - Modélisation, Intelligence, Processus et Système
2 ISL - Institut franco-allemand de recherches de Saint-Louis

This paper details the identification of a pitchaxis model for an 80-mm fin-stabilized canard-guided projectile through a hardware-in-the-loop experimental setup. This setup is based on an autonomous functional projectile prototype installed in a subsonic wind tunnel by the means of a three-degree-of-freedom gimbal mount. A nonlinear dynamical model is first derived from flight mechanics principles; then, a linearized model is obtained through Taylor series expansion. The a priori and a posteriori identifiability of the proposed linear model are assessed, and the associated experimental input signals are accordingly designed. The model parameters are then estimated using a numerical optimization procedure, and the associated uncertainty is obtained through a boostrapping method. The results and their implication on the projectile flight control design are finally discussed.

Mots clés: Flight mechanics; guided projectiles; systems identification; uncertain systems

Domaines: Automatique / Robotique

Guillaume Strub, Simona Dobre, Vincent Gassmann, Spilios Theodoulis, Michel Basset. Pitch-Axis Identification for a Guided Projectile Using a Wind-Tunnel-Based Experimental Setup. IEEE/ASME Transactions on Mechatronics, 2016, 21 (3), pp.1357-1365. ⟨10.1109/TMECH.2016.2525719⟩. ⟨hal-01510186⟩