Experimental study on the ship energy-saving autopilot system
Journal
Journal of Taiwan Society of Naval Architects and Marine Engineers
Journal Volume
37
Journal Issue
1
Pages
11-20
Date Issued
2018
Author(s)
Chia, B.-K.
Abstract
The PD and fuzzy control autopilot system were tested on a free running model system to study the energy saving efficiency of the autopilot system. The free running model ship can automatically control and maintain a stable speed and straight route by these two automatic steering control system. The route information was collected by the designed program and can be displayed real-time to check the reliability of experimental data. The test results show that the fuzzy control steering system has better direction heading keeping than that of the PD control steering sys-tem with the same speed in the calm sea condition. The heading angle of a model ship is maintaining between 0.5° and 0.5°, as well as the average heading angle is 0.06° controlled by the fuzzy control steering system. The heading angle of a model ship is maintaining between 1.5°and 0.5°, as well as the average heading angle is 0.23° controlled by the PD control steering system. However, the output rudder angle of the fuzzy control steering system was changed frequently, and the average current and power consumption of the steering gear is larger than that of the PD control steering system. The overall energy consumption of the fuzzy steering control system is larger than that of the PD steering control system. The test results show that the fuzzy control steering system also has better direction heading keeping than that of the PD control steering system with the same speed in the regular wave condition. The heading angle of a model ship is maintaining between 1° and 1.5°, as well as the average heading angle is 0.02° controlled by the fuzzy control steering system. The heading angle of a model ship is maintaining between 2°and 4°, as well as the average heading angle is 0.04° controlled by the PD control steering system. However, the output rudder angle of the fuzzy control steering system was changed frequently, and the average current and power consumption of the steering gear is larger than that of the PD control steering system. The overall energy consumption of the fuzzy steering control system is also larger than that of the PD steering control system. © 2018 Taiwan Society of Naval Architects and Marine Engineers. All Rights Reserved.
Subjects
Free running model; Fuzzy control of PD-type; PD Control
SDGs
Other Subjects
Air navigation; Control systems; Electric power utilization; Energy conservation; Energy utilization; Rudders; Ship models; Automatic steering control; Autopilot systems; Average currents; Heading angles; PD control; Route information; Steering control system; Steering systems; Fuzzy control
Type
journal article