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Development And Validation Of A Conceptual Design Program For Unmanned Underwater Vehicles
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Book Synopsis Development and Validation of a Conceptual Design Program for Unmanned Underwater Vehicles by : Alexander Walter Laun (Ensign.)
Download or read book Development and Validation of a Conceptual Design Program for Unmanned Underwater Vehicles written by Alexander Walter Laun (Ensign.) and published by . This book was released on 2013 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: With a renewed focus on the Asia-Pacific region, the United States Navy will increasingly rely on high-endurance unmanned underwater vehicles (UUVs) to support successful operations in a challenging threat environment. Undoubtedly, this naval strategy will necessitate versatile UUV systems that fulfill a broad spectrum of customer-generated requirements. This thesis presents a unique approach to the conceptual design process for UUVs, thereby allowing strategic decision-makers to rapidly explore a given design space. The proposed MA TLAB-based conceptual design program features five primary modules: a mission module, a hull module, a resistance module, a battery module, and a pressure vessel module. The final concept design results from an iterative process that considers the displacement, interior volume, and exterior volume of the total UUV system. To validate the proposed design algorithm, the author applied the best practices of modern naval architecture, marine engineering, ocean engineering, systems engineering, and submersible design. Model test data and computational fluid dynamics (CFD) software were used to validate the empirical equations selected for the resistance module. The pressure vessel module, including a genetic algorithm to generate viable scantlings, was validated by a consideration of manually optimized pressure vessel designs. Ultimately, this thesis demonstrates the sufficiency, reliability, and versatility of the proposed conceptual design program for UUVs.
Book Synopsis A Conceptual Design of a Propulsion System for an Autonomous Underwater Vehicle by : Gerald Sedor
Download or read book A Conceptual Design of a Propulsion System for an Autonomous Underwater Vehicle written by Gerald Sedor and published by . This book was released on 1989 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Autonomous Underwater Vehicles by : Sabiha Wadoo
Download or read book Autonomous Underwater Vehicles written by Sabiha Wadoo and published by CRC Press. This book was released on 2017-12-19 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Underwater vehicles present some difficult and very particular control system design problems. These are often the result of nonlinear dynamics and uncertain models, as well as the presence of sometimes unforeseeable environmental disturbances that are difficult to measure or estimate. Autonomous Underwater Vehicles: Modeling, Control Design, and Simulation outlines a novel approach to help readers develop models to simulate feedback controllers for motion planning and design. The book combines useful information on both kinematic and dynamic nonlinear feedback control models, providing simulation results and other essential information, giving readers a truly unique and all-encompassing new perspective on design. Includes MATLAB® Simulations to Illustrate Concepts and Enhance Understanding Starting with an introductory overview, the book offers examples of underwater vehicle construction, exploring kinematic fundamentals, problem formulation, and controllability, among other key topics. Particularly valuable to researchers is the book’s detailed coverage of mathematical analysis as it applies to controllability, motion planning, feedback, modeling, and other concepts involved in nonlinear control design. Throughout, the authors reinforce the implicit goal in underwater vehicle design—to stabilize and make the vehicle follow a trajectory precisely. Fundamentally nonlinear in nature, the dynamics of AUVs present a difficult control system design problem which cannot be easily accommodated by traditional linear design methodologies. The results presented here can be extended to obtain advanced control strategies and design schemes not only for autonomous underwater vehicles but also for other similar problems in the area of nonlinear control.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Autonomous Underwater Vehicles by : Frank Ehlers
Download or read book Autonomous Underwater Vehicles written by Frank Ehlers and published by SciTech Publishing. This book was released on 2020-08-26 with total page 591 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives a state-of-the-art overview of the hot topic of autonomous underwater vehicle (AUV) design and practice. It covers a wide range of AUV application areas such as education and research, biological and oceanographic studies, surveillance purposes, military and security applications and industrial underwater applications.
Book Synopsis Underwater Vehicles by : George M. Roman
Download or read book Underwater Vehicles written by George M. Roman and published by Nova Science Publishers. This book was released on 2020 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Underwater Vehicles: Design and Applications first explores the application of the adaptive Kalman filter algorithm to the estimation of high speed autonomous underwater vehicle dynamics. The authors investigate the performances of different control schemes, from non-model-based to model-based and adaptive model-based, implemented on a low-inertia underwater vehicle for three-dimensional helical trajectory tracking. Control laws for collision avoidance in three-dimensional environments are introduced, considering scenarios where a vehicle detects arbitrarily shaped and nonconvex obstacles using sensors"--
Book Synopsis A Hydrodynamic Analysis and Conceptual Design Study for an External Storage Enclosure System for Unmanned Underwater Vehicles by : Matthew Warren Hait
Download or read book A Hydrodynamic Analysis and Conceptual Design Study for an External Storage Enclosure System for Unmanned Underwater Vehicles written by Matthew Warren Hait and published by . This book was released on 2021 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: Medium-sized Unmanned Underwater Vehicles (UUV) are limited in their scope of operations, range, and endurance by their relatively small energy storage capacity. The majority of commercially available medium-sized UUVs are incapable of mission operations with durations longer than 30 hours, many unable to achieve 24 hours. The complex integration of control and instrumentation equipment internal to the UUV has a detrimental impact on the location, type and number of sensors installed within UUVs of this size, and are often at the cost of additional energy storage capabilities. This research investigates the hydrodynamic resistance and powering requirements needed to support a conceptually designed rigid multi-bodied UUV built around DARPA's SUBOFF hull from, the goal being to develop new and innovative low-cost methods of modifying commercially available UUVs to enhance range, payload capabilities and sensory performance through the use of novel external enclosure systems. This thesis investigates the impact on the UUV's drag by optimizing the location and size of the spheroidal shaped external mounted equipment bays such that resistance is minimized. Enclosures are capable of extending the sensor and payload capacity or increasing the onboard energy storage via detachable store pods. Energy storage methods, total energy capacity, and the impact of the overall system on range are investigated utilizing the constrained weight and volume of a 3000-meter-deep capable pressure hull. Performance is predicted via Computational Fluid Dynamics using OpenFOAM and is validated using Experimental Fluid Dynamics via model towing resistance. Structural strength was determined by Finite Element Analysis.
Download or read book Computer & Control Abstracts written by and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the Technology and the Mine Problem Symposium by : Albert M. Bottoms
Download or read book Proceedings of the Technology and the Mine Problem Symposium written by Albert M. Bottoms and published by . This book was released on 1996 with total page 756 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the 1992 Symposium on Autonomous Underwater Vehicle Technology, June 2 and 3, 1992, Washington, DC, USA by : Oceanic Engineering Society (U.S.)
Download or read book Proceedings of the 1992 Symposium on Autonomous Underwater Vehicle Technology, June 2 and 3, 1992, Washington, DC, USA written by Oceanic Engineering Society (U.S.) and published by . This book was released on 1992 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Computer Assisted Conceptual Design Procedure for Underwater Vehicles by : N. P. Kyrtatos
Download or read book A Computer Assisted Conceptual Design Procedure for Underwater Vehicles written by N. P. Kyrtatos and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Autonomous Underwater Vehicles by : Nuno Cruz
Download or read book Autonomous Underwater Vehicles written by Nuno Cruz and published by BoD – Books on Demand. This book was released on 2011-10-21 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: Autonomous Underwater Vehicles (AUVs) are remarkable machines that revolutionized the process of gathering ocean data. Their major breakthroughs resulted from successful developments of complementary technologies to overcome the challenges associated with autonomous operation in harsh environments. Most of these advances aimed at reaching new application scenarios and decreasing the cost of ocean data collection, by reducing ship time and automating the process of data gathering with accurate geo location. With the present capabilities, some novel paradigms are already being employed to further exploit the on board intelligence, by making decisions on line based on real time interpretation of sensor data. This book collects a set of self contained chapters covering different aspects of AUV technology and applications in more detail than is commonly found in journal and conference papers. They are divided into three main sections, addressing innovative vehicle design, navigation and control techniques, and mission preparation and analysis. The progress conveyed in these chapters is inspiring, providing glimpses into what might be the future for vehicle technology and applications.
Book Synopsis Deterministic Artificial Intelligence by : Timothy Sands
Download or read book Deterministic Artificial Intelligence written by Timothy Sands and published by BoD – Books on Demand. This book was released on 2020-05-27 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Kirchhoff’s laws give a mathematical description of electromechanics. Similarly, translational motion mechanics obey Newton’s laws, while rotational motion mechanics comply with Euler’s moment equations, a set of three nonlinear, coupled differential equations. Nonlinearities complicate the mathematical treatment of the seemingly simple action of rotating, and these complications lead to a robust lineage of research culminating here with a text on the ability to make rigid bodies in rotation become self-aware, and even learn. This book is meant for basic scientifically inclined readers commencing with a first chapter on the basics of stochastic artificial intelligence to bridge readers to very advanced topics of deterministic artificial intelligence, espoused in the book with applications to both electromechanics (e.g. the forced van der Pol equation) and also motion mechanics (i.e. Euler’s moment equations). The reader will learn how to bestow self-awareness and express optimal learning methods for the self-aware object (e.g. robot) that require no tuning and no interaction with humans for autonomous operation. The topics learned from reading this text will prepare students and faculty to investigate interesting problems of mechanics. It is the fondest hope of the editor and authors that readers enjoy the book.
Book Synopsis Computational Hydrodynamics and Control Modeling for Autonomous Underwater Vehicles by :
Download or read book Computational Hydrodynamics and Control Modeling for Autonomous Underwater Vehicles written by and published by . This book was released on 2003 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The long term objective of the program is to develop predictive technologies to support virtual design and evaluation of underwater vehicles systems. CFD technologies will be used to protect hydrodynamic models for AUVs and those models will be coupled with control system design and modeling tools to allow vehicle conceptual design to be evaluated within the context of a realistic mission. The objectives of this effort were to compare the forces and moments acting on a maneuvering AUV predicted by computational fluid dynamics (CFD) code with similar data collected aboard an operational AUV. In particular, the multi-block Navier-Stokes flow solver UNCLE (Unsteady Computational of Field Equations) was used in this effort.
Book Synopsis A Conceptual Design Study of a Hovering System Controller for an Autonomous Underwater Vehicle by : Chris A. Thompson
Download or read book A Conceptual Design Study of a Hovering System Controller for an Autonomous Underwater Vehicle written by Chris A. Thompson and published by . This book was released on 1987 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: An Autonomous Underwater Vehicle (AUV) will have many operational scenarios that will include a transition from cruise to hover over a fixed position in the ocean. While hovering, the AUV must be able to balance the current induced forces a difficult task to accomplish automatically. The magnitude of these forces induced on an example AUV have been estimated for currents from 4 m/s to 1 m/s with the incident current varying from 0 deg to 360 deg. Using the estimated forces, different configurations of thrusters were investigated and the power required for different thruster configurations compared. Three thrusters (two longitudinal, one lateral) can balance the forces exactly and a unique solution was evaluated. With redundant thrusters, more economical schemes can developed using force allocation logic with minimum norm solutions. System horsepower requirements have been estimated and a conceptual model based controller methodology has been proposed. The force allocation logic proposed will now allow for a smooth transition from cruise to hover mode positions. Keywords: Theses; Stationkeeping.
Download or read book Oceans 2000 MTS/IEEE written by and published by . This book was released on 2000 with total page 810 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rex 2 written by Dylan Owens and published by . This book was released on 2009 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: The practical usage of unmanned underwater vehicles (UUVs) is limited by vehicle and operation cost, difficulty in accurate navigation, and communication between the vehicle and operator. The "Rex 2" UUV employs a system design where a submersible is connected to a float at the water's surface by means of a tether. By maintaining a surface expression, high-bandwidth radio communication to the operator becomes possible, and GPS may be used for accurate navigation. This arrangement allows the freedom of movement characteristic of untethered autonomous underwater vehicles (AUVs), while maintaining the live operator control and communication found with tethered remotely operated vehicles (ROVs). Expanding on the design and field experiences with the MIT AUV Lab's first Reef Explorer UUV, Rex 2 was designed to be inexpensive, easy to deploy, adaptable to various payloads, and simple to use. Rex 2 was designed, built, and operated in a number of ocean field tests, validating the utility of the vehicle and system concept.
