RESEARCH PAPERS: Offshore Mechanics and Arctic Engineering

Control of Marine Structures

[+] Author and Article Information
E. R. Jefferys

University College, London, U.K.

E. Mavrommatakis

Det norske Veritas, London, U.K.

J. Energy Resour. Technol 106(4), 399-404 (Dec 01, 1984) (6 pages) doi:10.1115/1.3231098 History: Received July 25, 1983; Revised January 06, 1984; Online October 22, 2009


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.

Copyright © 1984 by ASME
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