Improvement of control precision for ship movement using a multidimensional controller

Abstract

This paper presents the influence of a first stage inertial element on the operation of a state space controller for a third dimension object. First chapter presents a brief introduction to linear matrix inequalities as one of the methods of controller analysis and synthesis, with examples, and helps to places the below paper in this wide field of science. Chapter two presents the controlled object, which is a model of a very large crude carrier (VLCC) ship, called Blue Lady, along with its mathematical state space model. Chapter three shows state space controller design using numerical methods of linear equalities optimization, where the given values are u longitudinal, v lateral and r rotational velocities. Presented there is also the implementation method of an inertial element to a multidimensional object for space state controller synthesis. Chapter four shows computer simulation results and focuses on showing influence of the proposed design on control error of the multidimensional closed loop system. Finally, chapter five concludes and comments simulation results and shows possible direction of future studies. ARTICLE HISTORY

Analysis of the Use of Electric Drive Systems for Crew Transfer Vessels Servicing Offshore Wind Farms

“…Then after service work, the crews are again transported from the wind tower to the port or the residential ship. To minimize service costs [28], this process is subject to optimization regarding both its management [22,29,30], and the safe steering of the ship along a given route [31][32][33][34][35][36]. CTVs are intensively used during the operation of offshore wind farms and require frequent refueling, which is both expensive and time consuming.…”

Maritime Autonomous Surface Ship’s Path Approximation Using Bézier Curves

“…The training ships were then in automatic control. For the VLCC "Blue Lady", we referred to the papers of Rybczak and Tomera [20][21][22], where trajectory tracking performance was described in a very detailed way. We also use trajectories registered during the LNG "Dorchester Lady" path following described in [18].…”

Effectiveness of Multidimensional Controllers Designated to Steering of the Motions of Ship at Low Speed

“…Special attention was paid to proper modeling of the ship’s behavior during movement with any drift angle (e.g., astern or askew). The full description of the model can be found in [ 3 , 34 , 35 , 36 ].…”

“…The ‘Blue Lady’ multidimensional model is described in detail also in e.g., [ 42 ]. The controller synthesis method for a state space controler for above ship model is shown in [ 36 , 43 ]. Based on simulation results controller structure based on a state space controller was chosen, as: …”