Estimation of Observer Parameters for Dynamic Positioning Ships

Dynamic Positioning of Ships

A nonlinear control design study Proefschrift ter verkrijging van de graad van doctor aan de Technische Universiteit Delft, op gezag van de Rector Magnificus prof. The cover design is done by Fay van leeuwen: [email protected] Printed in The Netherlands by Wöhmann Print Service iii I want to dedicate this piece of work to my late father Dil Kabeer who realized the value of education for his ...

An Overview about Dynamic Positioning of Ships

DPS have been commercially available since the 1960s, and today a DP system is a natural component in the delivery of many new vessels. The first ship to fulfil the accepted definition of dynamic positioning was the “Eureka” (1961), of about 450 tons displacement and length 130 feet. This ship was fitted with an analogue control system, interfaced with a taut wire reference. Equipped with steer...

Nonlinear Observer Design for Dynamic Positioning

Recent developments in optimal observer design for dynamic positioning have led to application of contraction analysis. In this paper a theoretical method for nonlinear optimal observer design and a suboptimal observer using a state-dependent Riccati equation approach are presented. The observer will be compared to an existing observer and its properties and performance is discussed. Early obse...

Fuzzy Control of Dynamic Positioning Systems for Ships

In this paper we consider the control problem of Dynamic Positioning Systems for Ships (DPSS). It interests as a case which study in nonlinear controller design because the model exhibits nonlinear interaction in three degrees of freedom (surge, sway, and yaw) by means of main propellers aft of the ship. The DPSS system considered in this paper is modeled by a Takagi-Sugeno (T-S) type fuzzy mod...

Output Feedback Passivity Based Controllers for Dynamic Positioning of Ships