Update on Ifremer technological developments and operational feedbacks with underwater systems
This paper reports on the status of Ifremer Underwater systems. It will focus on recent innovations, improvements and operational references of the remotely operated vehicle “Victor 6000”, of the autonomous underwater vehicles “AsterX” and “IdefX”, of the new “Sysif” seismic tool and some hints about RanD in the domain of Advanced Intervention AUVs.
AUVs for oceanographic science at IFREMER, project progress and operational feedback
The 'coastal AUV' project at IFREMER, launched in 2002, has the aim to develop two oceanographic survey AUV as well as several payload modules and operational tools, in order to provide efficient and economically interesting tools for the French oceanographic community. The corresponding AUVs have been developed by Research Ltd - Vancouver. ISE This paper presents developments and operational feed-back in the project period 2003-2007.
A new power measuring circuit using a bridge-connected magnetic circuit and another magnetic core
The authors describe the operating characteristics of an oscillating circuit using a bridge-connected magnetic circuit and another magnetic core. A square-shape output voltage is obtained in the oscillating circuit. The pulsewidth in positive and negative half cycles of output voltage changes with the current of the U-form core windings and with the signal voltage applied to the exciting windings. The mean value of the output voltage varies in proportion to the product of the current and the signal voltage. Utilizing this feature, an application of the oscillating circuit to a novel power measuring circuit of simple construction is presented. >