Theses and Dissertations
Optimal fault detection and resolution during maneuvering for Autonomous Underwater Vehicles
(Monterey, California. Naval Postgraduate School, 2000-03)
In order to increase robustness, reliability, and mission success rate, autonomous vehicles must detect debilitating system control faults. Prior model-based observer design for 21UUV was analyzed using actual vehicle ...
Effect of friction and control parameters on the tracking accuracy of a target seeker
(1987-12)
The tracking accuracy of a missile target seeker depends on many variables. For
a target seeker using a gimbaled platform, an important variable is the friction induced
by the preloaded bearings, and by the short wires ...
The experimental evaluatation of a DGPS Based Navigational System for the ARIES AUV
(Monterey, California. Naval Postgraduate School, 2000-06)
Autonomous Underwater Vehicles (AUV) currently use varying methods for navigation, but incorporating GPS into those methods is becoming a popular technique. This thesis experimentally evaluates the configuration and ...
Four quadrant dynamic model of the AUV II thruster
(Monterey, California. Naval Postgraduate School, 1993-09)
The dynamic behavior of the AUV II thruster was mathematically modeled by a four quadrant mapping of the propeller blade lift/drag coefficients as a function of fluid effective angle of attack. The model was validated with ...
Reactive obstacle avoidance for the REMUS Autonomous Underwater Vehicle utilizing a forward looking sonar
(Monterey California. Naval Postgraduate School, 2006-06)
One day fully autonomous AUV's will no longer require human interactions to complete its missions. To make this a reality, the AUV must be able to safely navigate in unfamiliar environments with unknown obstacles. This ...
A conceptual design study of a hovering system controller for an Autonomous Underwater Vehicle
(Monterey, California. Naval Postgraduate School, 1987-12)
Hovering, Stationkeeping, Underwater Vehicles, Control Systems, Configurations, Control, Horsepower, Oceans, Position (Location), Redundancy, Scenarios, Theses, Thrusters, Transitions Hovering, Stationkeeping, Underwater ...
Design and construction of a second generation AUV
(Monterey, California. Naval Postgraduate School, 1989-12)
The design and construction of an Autonomous Underwater Vehicle (AUV) for use as a research and development testbed at the Naval Postgraduate School (NPS) is presented. Design objectives, analysis and trade-offs are discussed ...
A study of model based maneuvering controls for autonomous underwater vehicles
(1987-12)
Autonomous Underwater Vehicles (AUV) are being considered by the U.S. Navy for a variety of missions. Requirements for autonomy reinforce the need for a robust maneuvering controller that can ensure accurate tracking of a ...
An experimental study of the response of small tunnel thrusters to triangular and square wave inputs
(Monterey, California. Naval Postgraduate School, 1992-12)
The response of small tunnel thrusters to triangular and square wave changes in applied voltages to the thruster motor is studied. Previous mathematical models have attempted to identify the dynamic characteristics in ...
Transportability analysis of the M119 Howitzer in the firing configuration
(Monterey, California. Naval Postgraduate School, 1993-09)
This study was undertaken to determine if the US Army's M119 Howitzer could be safely towed in the 'firing' position using the existing A-Frame brace to support the gun tube during movement. A computer model of the howitzer ...
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Healey, Anthony J. (58)
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Mechanical Engineering (58)