L₁ adaptive control integrated missile autopilot and guidance

An output feedback L₁ adaptive controller is designed and applied to the integrated missile guidance and control problem. A two-dimensional simulation of the missile lateral dynamics and nonlinear relative kinematics is used to evaluate and compare the performance of di?erential-game-based guidance law and proportional navigation to integrated L₁ adaptive control based missile guidance and control. The effectiveness of these guidance and control strategies is compared on the basis of terminal miss distance and the zero-effort miss, which is taken from the differential game based formulation of the missile guidance problem. The output feedback L₁ adaptive controller demonstrates robustness to significant changes in the missile dynamics (up to ±50% change in the missile model parameters), while minimizing the zero-effort miss and outperforming the other guidance and control strategies used in this comparison.