This paper explores a hierarchical shape control method for large, lightweight polymer mirrors with unimorph actuation. Two methods of generating strain-driven forces are discussed. The initial focus is on the study of linear interaction matrices for various actuation configurations. Subsequently, control algorithms are designed for a large active optics aperture. The controlled degrees of freedom for the injection spots of electron flux are estimated, and criteria for examining iteration convergence are proposed.
This paper delves into the investigation of morphing capabilities in a unimorph deformable mirror within the context of Active Optics applications, specifically when exposed to environmental factors in space. The study encompasses an array of factors that contribute to disturbances, encompassing intricate thermal and mechanical conditions that impact the ferroelectric properties of strain actuation. The study also focuses on the effects of stress-induced geometric stiffness on the mirror's structural rigidity. In addition, the paper envisions the potential utilization of these mirrors in lightweight satellite systems.
This paper proposes an ultra-lightweight design of space reflectors made of polymer thin layers, to increase the aperture size of space observation platform with higher imaging resolution. The morphing capabilities are evaluated with both petal-like segmented and monolithic configured reflectors as the primary mirror of space telescopes, by forming a set of Zernike modes. Finally, a compound control strategy using a deformable relay mirror to compensate the residual surface error corrected partially by the active unimorph primary mirror.
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