Nonlinear Sampled-Data Stabilization of Dynamically Positioned Ships

In this brief, we consider the nonlinear sampled-data stabilization of dynamically positioned ships. Using the nonlinear sampled-data control theory developed by Nesic and the integrator backstepping technique for the Euler approximate model, we design semiglobally practically asymptotically (SPA) stabilizing controllers. We design both state feedback and output feedback controllers. We give a numerical example to illustrate the design methods.