Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 6 of 6 for “"course-keeping"”.
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Robust Observers And Controllers For Marine Surface Vessels Undergoing Maneuvering And Course-Keeping Tasks
<p>The dynamic behavior of marine surface vessels is highly nonlinear. Moreover, it is significantly influenced by environmental disturbances induced by winds, random sea waves and currents. To yield a desired response of the ship, the guidance and control system of the ship should be robust to …
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A Design Methodology for Adaptive Open-Seas Course-Keeping Control of Containerships (Adaptive, Steering, Ship)
During the seventies, the greatly increased price of fuel oil and substantial over-capacity in available tonnage of the world's merchant shipping have combined to cause a major problem for the maritime industry. This has stimulated an increasing interest in research on autopilots for ships. Much of …
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Design of Supplementary Thrusting Unit for a Miniature Autonomous Submarine
… autonomously perform advance maneuvers such as course-keeping, mooring and obstacle avoidance. The study of the miniaturized thrusters prompted an in-depth look into two thruster designs. The first was a retractable rimdriven propeller design which was found to be too power inefficient for …
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Robust Yaw/roll Control of High-Speed Containerships
… To minimize the yaw/roll coupling effect on the course-keeping mode, the multivariable (MV) approach was applied. The objective was to employ the minimum number of new sensors and actuators to obtain reasonable operating results. Hence, rudder-only control and rudder/fin control were introduced. …
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Fuzzy Logic Approaches to Modelling, Identification and Control of Non-Linear Systems
… of the fuzzy-like PD controller for course- changing and course-keeping in an underwater vehicle.<br/>
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Intelligent autopilots for ships
… control techniques to the problem of designing course-keeping and course-changing autopilots for ships. For this reason the framework of intelligent control theory is introduced and a pragmatic definition of intelligent controllers is stated. The learning and adaptive features of neural networks …