Author(s)

Alian Shi

Corresponding Author

Alian Shi

Abstract

Dynamic positioning is a kind of positioning system specially designed for ships in marine engineering. It first determines the exact position of the ship through the sonar, and then uses the automatic control system on the ship to issue instructions to the ship to achieve the positioning effect. While positioning, the information transmits via the computer. Most of them require only a few minutes of steady control of the ship being sailed at a designated location. After the positioning system is turned on, the current sensors, wind direction sensors, heading sensors, and position sensors on the ship start working at the same time, and the real-time data are quickly transmitted to the computer. The computer then compares with the originally scheduled position and sends a powerful command to push the ship forward or adjust. The original thrust allows the ship to stop at a specified position accurately and steadily. The system can also use other advanced technologies to control the error within a few meters, and the technology can be used not only for ship positioning but also to control the distance between the ship and the ship affixed to make it safe and reliable. The ship's dynamic positioning system is not restricted by the distance and depth of water. Ships can use this system to perform many offshore operations such as sand dredging, oil extraction, and sea rescue, making it difficult to perform feasible.

Keywords

Nonlinear Control, Dynamic Positioning, Model Construction