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Published June 2008 | public
Journal Article

Robust-to-Modeling-Uncertainties Nonlinear Control Design for Offshore Structures

Abstract

A controller design methodology for offshore structures is investigated. Because stochastic simulation is used for evaluation of the system's performance in the design stage, nonlinear characteristics of the structural response and excitation can be explicitly incorporated into the assumed system model. Model parameters whose values are uncertain are probabilistically described. In this context, the controller is designed for optimal reliability, quantified as the probability that the performance will not exceed some acceptable bounds over some time duration. The methodology is illustrated with an example involving the control of a tension leg platform in an uncertain sea environment.

Additional Information

© 2008 International Society of Offshore and Polar Engineers. Received September 12, 2007; revised manuscript received by the editors March 31, 2008. The original version (prior to the final revised manuscript) was presented at the 17th International Offshore and Polar Engineering Conference (ISOPE-2007), Lisbon, July 1-6, 2007

Additional details

Created:
August 19, 2023
Modified:
October 20, 2023