Self-Tuning Shape Control of Massively Actuated Adaptive Mirrors

This paper focuses on the design of the control system of massively actuated deformable mirrors for astronomical adaptive optics applications. The proposed solution is based on a high-frequency completely decentralized feedback combined with a hybrid low-frequency term, which is the sum of feedforward-feedback contributions. An appropriate in the field system identification procedure and an automatic gain optimization eventually lead to a complete self-tuning controller. The improvements of system performances are evaluated through high-fidelity simulations.