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- W2833331838 abstract "This paper discusses the shape control of deformable mirrors for Adaptive Optics in the dynamic range. The phenomenon of control-structure interaction appears when the mirror becomes large, lowering the natural frequencies fi, and the control bandwidth fc increases to improve the performance, so that the condition fc < fi is no longer satisfied. In this case, the control system tends to amplify the response of the flexible modes and the system may become unstable. The main parameters controlling the phenomenon are the frequency ratio fc / fi and the structural damping s. Robustness tests are developed which allow to evaluate a lower bound of the stability margin. Various passive and active strategies for damping augmentation are proposed and tested in simulation." @default.
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- W2833331838 date "2018-06-01" @default.
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- W2833331838 title "Control-structure interaction in piezoelectric deformable mirrors for adaptive optics" @default.
- W2833331838 doi "https://doi.org/10.12989/sss.2018.21.6.777" @default.
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