Concurrent Airframe-Controller Optimization of a Guided Projectile fitted with Lifting Surfaces

Valentin Riss (1) , Emmanuel Roussel (1) , Edouard Laroche (2)

1 ISL - Institut franco-allemand de recherches de Saint-Louis
2 ICube - Laboratoire des sciences de l'ingénieur, de l'informatique et de l'imagerie

Innovative long-range guided projectiles concepts require precise flight path tracking in order to achieve maximum range and terminal accuracy. For such airframes featuring large lifting surfaces, vertical maneuvering performance relies on pitch attitude control. Thus, a challenging problem arises from the conflict between performance requirements and actuator limitations. The projectile static stability should be tailored to limit controls deflections and actuator bandwidth. This work proposes a plant-controller optimization (PCO) procedure to tune the projectile static stability and the controller gains in a single step. This methodology is applied to actuator usage minimization under control performance constraint. The optimal airframe-controller design shows superior actuator roll-off characteristics compared to the outcome of the traditional "design then control" methodology. The codesign also proves to be much less computationally intensive, which confirms the relevance of the approach.

Domaines: Autre

Valentin Riss, Emmanuel Roussel, Edouard Laroche. Concurrent Airframe-Controller Optimization of a Guided Projectile fitted with Lifting Surfaces. 2022 AIAA SciTech Forum, 3-7 janv. 2022, San Diego, CA, USA, Jan 2022, San Diego, United States. ⟨hal-03398233⟩