Quasi-LPV Modeling of Guided Projectile Pitch Dynamics through State Transformation Technique

In this paper, we develop a reliable Linear Parameter-Varying (LPV) model of the pitch channel dynamics fin-stabilized projectile. Among available LPV design approaches, State Transformation is analyzed, being particularly suitable for class systems defined as output nonlinear, and compatible with projectile formulation. The provides quasi-LPV representation, which corresponds to an exact transformation original nonlinear model, preserving relevant couplings that are usually lost through classical approximation methods. Some important considerations regarding limitations approach also discussed verified in missile dynamics. accuracy obtained assessed by means open-loop simulations, comparing performance at selected flight conditions.