Producción CyT
Congreso
Autoría
Fecha
2008
Editorial y Lugar de Edición
Pontificia Universidad Católica de Valparaíso
Resumen
Información suministrada por el agente en
SIGEVA
In the offshore industry, there exists a great interest on underwater pipeline inspections, mainly for preventive maintenance of submarine installations. In addition, Navy and Cable Companies are interested on extending this technology also to cable inspection. Nowadays, a big percentage of pipelines inspections are internal, performed with pipeline inspection gauge (pig). However, in many cases this technique is not practical due to technical reasons (clogging, length of the pipe, ...), or sin...
In the offshore industry, there exists a great interest on underwater pipeline inspections, mainly for preventive maintenance of submarine installations. In addition, Navy and Cable Companies are interested on extending this technology also to cable inspection. Nowadays, a big percentage of pipelines inspections are internal, performed with pipeline inspection gauge (pig). However, in many cases this technique is not practical due to technical reasons (clogging, length of the pipe, ...), or since some critical parameters for safety assessment (free-span, pipeline exposure, rocks on the pipe) can only be monitored by external inspection, at low level altitude, typically 5 meters. The existing technology for external inspection is based on using survey vessels equipped with Remotely Operated Vehicles (ROVs) or Remotely Operated Towed Vehicles (ROTVs). Even though this is the standard method used today, it presents several disadvantages like slower survey speed, particularly at deep waters, where offshore industry is quickly shifting, and higher costs due to the need of a dynamic positioning vessel and a mother ship maneuvering the ROV, with their associated crews. There exists then a great interest on shifting from ROV technology to AUV technology. This article reports the current works on the research, design and development of the main modules of such an AUV. They are the artificial intelligence based dynamic mission planner, the guidance and control systems tested with different approaches, and the navigation module. Preliminary results from sea trials as well as computer simulation and hardware in the loop simulations will be presented and discussed. Keywords: autonomous underwater vehicles; preventive maintenance; underwater pipelines; underwater cables; intelligent control
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Palabras Clave
autonomous underwater vehiclesoff-shore industrypipeline tracking