MODELING OF THE AUTOMATION SYSTEM FOR STABLE SHIP'S SPEED CONTROL UNDER NAVIGATION IN ICE CONDITIONS ON THE EXAMPLE OF ARC7 LNG CARRIER
The article identifies the possibility of implementation some elements of ice navigation automation using like an example ARC7 LNG carriers as part of the prospects of little crew and crewless navigation. The parameters of the ship's propulsion system, as well as the features of its using while ice navigation are examined. On the basis of this examination the analysis was carried out. Analysis showed the possibility to automate the process of maintaining a steady speed in ice conditions with a variable trust loads. A dynamics model of ship's motion in ice conditions was introduced. The model was created in the Matlab Simulink software. The control loop was constructed using a proportional-integral-differential (PID) controller. The control circuit's work was simulated for various dynamic loads. Possible limitations of the system were considered, the operational stability was analyzed. The graphs ofprocess were presented.