Anderlini, E;
Real-Arce, DA;
Morales, T;
Barrera, C;
Hernandez-Brito, JJ;
Phillips, AB;
Thomas, G;
(2021)
A Marine Growth Detection System for Underwater Gliders.
IEEE Journal of Oceanic Engineering
, 46
(4)
pp. 1099-1113.
10.1109/JOE.2021.3066373.
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Abstract
Marine growth has been observed to cause a drop in the horizontal and vertical velocities of underwater gliders, thus making them unresponsive and needing immediate recovery. Currently, no strategies exist to correctly identify the onset of marine growth for gliders and only limited data sets of biofouled hulls exist. Here, a field test has been conducted to first investigate the impact of marine growth on the dynamics and power consumption of underwater gliders and then design an anomaly detection system for high levels of biofouling. A Slocum glider was deployed first for eight days with drag stimulators to imitate severe biofouling; then, the vehicle was redeployed with no additions to the hull for further 20 days. The mimicked biofouling caused a speed reduction due to a significant increase in drag. Additionally, the lower speed causes the steady-state flight stage to last longer and the rudder to become less responsive; hence, marine growth results in a shortening of deployment duration through an increase in power consumption. As actual biofouling due to p. pollicipes occurred during the second deployment, it is possible to develop and test a system that successfully detects and identifies high levels of marine growth on the glider, blending model- and data-based solutions using steady-state flight data. The system will greatly help pilots replan missions to safely recover the vehicle if significant biofouling is detected.
| Type: | Article |
|---|---|
| Title: | A Marine Growth Detection System for Underwater Gliders |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/JOE.2021.3066373 |
| Publisher version: | https://doi.org/10.1109/JOE.2021.3066373 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions. |
| Keywords: | Biofouling, condition monitoring, fault detection, marine growth, underwater glider (UG) |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10130134 |
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