Robust-to-Modeling-Uncertainties Nonlinear Control Design for Offshore Structures
نویسندگان
چکیده
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.
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