KEYWORDS: Mirrors, Systems modeling, Motion models, Space mirrors, Control systems, Optical components, Sensors, Finite element methods, Performance modeling, Matrices
Optical systems may contain mechanical structure, optics, sensors, and active control to improve image quality or to
point and stabilize the line-of-sight. A single model that includes structural, optical, and active control elements is
beneficial for trade studies and defining hardware requirements. The process and benefits of representing structural and
optical elements as a state space model are discussed. A state space model is derived for a reaction-less steering mirror.
Steering mirror control and performance are discussed. A method for creating state space models directly from finite
element normal modes is also described. A single closed loop model that represents both structural and optical effects
in the state space form can be used to quickly evaluate system performance.
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