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    Verification of a six-degree of freedom simulation model for the REMUS autonomous underwater vehicle

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    Prestero_thesis.pdf (6.930Mb)
    Date
    2001-09
    Author
    Prestero, Timothy  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/3040
    DOI
    10.1575/1912/3040
    Keyword
     REMUS (Autonomous underwater vehicle); Remote submersibles 
    Abstract
    Improving the performance of modular, low-cost autonomous underwater vehicles (AUVs) in such applications as long-range oceanographic survey, autonomous docking, and shallow-water mine countermeasures requires improving the vehicles' maneuvering precision and battery life. These goals can be achieved through the improvement of the vehicle control system. A vehicle dynamics model based on a combination of theory and empirical data would provide an efficient platform for vehicle control system development, and an alternative to the typical trial-and-error method of vehicle control system field tuning. As there exists no standard procedure for vehicle modeling in industry, the simulation of each vehicle system represents a new challenge. Developed by von Alt and associates at the Woods Hole Oceanographic Institute, the REMUS AUV is a small, low-cost platform serving in a range of oceanographic applications. This thesis describes the development and verification of a six degree of freedom, non-linear simulation model for the REMUS vehicle, the first such model for this platform. In this model, the external forces and moments resulting from hydrostatics, hydrodynamic lift and drag, added mass, and the control inputs of the vehicle propeller and fins are all defined in terms of vehicle coefficients. This thesis describes the derivation of these coefficients in detail. The equations determining the coefficients, as well as those describing the vehicle rigid-body dynamics, are left in non-linear form. to better simulate the inherently non-linear behavior of the vehicle. Simulation of the vehicle motion is achieved through numeric integration of the equations of motion. The simulator output is then checked against vehicle dynamics data collected in experiments performed at sea. The simulator is shown to accurately model the motion of the vehicle.
    Description
    Submitted in partial fulfillment of the requirements for the degree of Master of Science at the Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution September 2001
    Collections
    • WHOI Theses
    • Applied Ocean Physics and Engineering (AOP&E)
    Suggested Citation
    Thesis: Prestero, Timothy, "Verification of a six-degree of freedom simulation model for the REMUS autonomous underwater vehicle", 2001-09, DOI:10.1575/1912/3040, https://hdl.handle.net/1912/3040
     

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