Guidance, navigation and control system for the Tethra unmanned underwater vehicle

High-resolution (acoustic & video) seabed survey requires deployment of sensors on platforms close to the seabed. The unstructured, harsh and hazardous nature of the ocean environment and close proximity to the seabed and other hazards produces serious problems for autonomous underwater vehicles (AUV) during the mission. The Mobile & Marine Robotics Research Centre at the University of Limerick is developing a highly manoeuvrable AUV/ROV platform to address the challenges of high-resolution seabed survey in both shallow and deep water. The overall system integrates state-of-the-art survey equipment, a multi-thruster open-frame AUV Tethra and an advanced control system. This paper gives an overview of the overall system including simulation results.

[1]  Dana R. Yoerger,et al.  Fine-scale seafloor survey in rugged deep-ocean terrain with an autonomous robot , 2000, Proceedings 2000 ICRA. Millennium Conference. IEEE International Conference on Robotics and Automation. Symposia Proceedings (Cat. No.00CH37065).

[2]  M. Ludvigsen,et al.  Model supported AUV freshwater distribution surveys in the upper layers of deep fjords , 2003, Oceans 2003. Celebrating the Past ... Teaming Toward the Future (IEEE Cat. No.03CH37492).

[3]  E. Omerdic,et al.  Design of an advanced AUV for deployment close to the seabed and other hazards , 2005, Europe Oceans 2005.

[4]  Panos J. Antsaklis,et al.  Introduction to intelligent control systems with high degrees of autonomy , 1993 .

[5]  G. N. Roberts,et al.  Thruster fault diagnosis and accommodation for open-frame underwater vehicles , 2004 .

[6]  Joan Batlle,et al.  Identification of Non Linear Models of Unmanned Underwater Vehicles: Comparison Between Two Identification Methods , 2003 .

[7]  Gwyn Griffiths,et al.  Technology and applications of autonomous underwater vehicles , 2002 .

[8]  James G. Bellingham,et al.  Keeping layered control simple (autonomous underwater vehicles) , 1990, Symposium on Autonomous Underwater Vehicle Technology.

[9]  E. Omerdic,et al.  Implementation and application of a real-time sidescan sonar simulator , 2005, Europe Oceans 2005.

[10]  P. E. An,et al.  An AUV survey in the littoral zone: small-scale subsurface variability accompanying synoptic observations of surface currents , 2001 .

[11]  A. Ishoy.  How to make survey instruments "AUV-friendly" , 2000, OCEANS 2000 MTS/IEEE Conference and Exhibition. Conference Proceedings (Cat. No.00CH37158).

[12]  D. Yoerger,et al.  Multisensor mapping of the deep seafloor with the Autonomous Benthic Explorer , 2000, Proceedings of the 2000 International Symposium on Underwater Technology (Cat. No.00EX418).

[13]  Louis L. Whitcomb,et al.  Underwater robotics: out of the research laboratory and into the field , 2000, Proceedings 2000 ICRA. Millennium Conference. IEEE International Conference on Robotics and Automation. Symposia Proceedings (Cat. No.00CH37065).

[14]  Joan Batlle,et al.  Recent trends in control architectures for autonomous underwater vehicles , 1999, Int. J. Syst. Sci..

[15]  Chanop Silpa-Anan,et al.  Autonomous underwater robot : vision and control , 2001 .

[16]  S. M. Smith,et al.  Using small AUV for oceanographic measurements , 1999, Oceans '99. MTS/IEEE. Riding the Crest into the 21st Century. Conference and Exhibition. Conference Proceedings (IEEE Cat. No.99CH37008).

[17]  Junku Yuh,et al.  Design and Control of Autonomous Underwater Robots: A Survey , 2000, Auton. Robots.

[18]  Edwin Danson.  The Economics of Scale: Using Autonomous Underwater Vehicles (AUVs) for Wide-Area Hydrographic Survey and Ocean Data Acquisition , 2002 .

[19]  Maja Matijasevic,et al.  Control architectures for autonomous underwater vehicles , 1997 .

[20]  Robert Sutton,et al.  Advances in Unmanned Marine Vehicles , 2006 .

[21]  Thor I. Fossen,et al.  Nonlinear modelling, identification and control of UUVs , 2006 .