L1 Adaptive Control of Projectile Fin by Piezoelec- tric Actuator

Document Type



In this paper, an L1 adaptive control system is designed for the control of a projectile fin. The rotational motion of the fin on the projectile is controlled by a flexible cantilever beam with a piezoelectric active layer, mounted inside the fin. The model includes time-varying disturbance input. In the closed-loop system, the applied voltage accomplishes regulation of the fin angle using the feedback of the fin angle and its derivative. Interestingly, the structure of the controller is independent of the dimension of the model. Simulation results show precise control of the fin angle, despite large parameter uncertainties and disturbance input.


Adaptive control; Feedback control system; Piezoelectric actuator; Projectile fin control


Controls and Control Theory | Electrical and Computer Engineering | Electrical and Electronics | Electronic Devices and Semiconductor Manufacturing | Engineering | Power and Energy | Signal Processing | Systems and Communications


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