Control of Marine Structures

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Abstract
Active control of the motion of marine structures may produce structural and operational savings over conventional passive designs. It is shown how equations of motion of typical marine structures, including those with frequency-dependent coefficients, may be rendered into a form compatible with modern controller design methods. Linear quadratic Gaussian control theory is summarized and applied to a simple example. The limitations of the theory are discussed and the effects of a force-limited actuator are quantified.

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