Hysteresis modeling and go-to control of deformable mirrors in adaptive optics

摘要: We propose a model-based approach to provide “open-loop” control, or precise go-to capability, for piezo actuated deformable mirrors (DMs) used in adaptive optics. Our DM model consists of two-dimensional, linear partial differential equation known as the thin plate describe facesheet which is coupled nonlinear scalar ordinary equations hysteretic actuators. control carried out two stages. In first stage we compute actuator loads that drive prescribed shape. The second involves solution “inverse” command voltages induce computed stage. This work significant it may enhance predictive and feed-forward schemes Standard integral controllers, operating closed loop, also benefit since gain be increased.