ABSTRACT
During the wind-wave tank model test of floating offshore wind turbine (FOWT), acquiring the model attitude angles is one of the key objectives. Due to the environment of the wind-wave tank, there are inevitable shortcomings of traditional contact sensors, such as difficult installation, increased model weight, limited sampling frequency, and incomplete data acquisition. In this paper, a vision-based technology is presented, which mainly consists of (1) construct a high-speed video acquisition network; (2) identify, track and match the circular landmarks on the sequence image, and obtain three-dimensional coordinates of the spatial points using the spatial point reconstruction algorithm; (3) propose a method for computing model attitude angles in sequence images to obtain the pose of the model in each frame; (4) deduce the theoretical accuracy of attitude angle from the obtained accuracy of landmarks, and propose a way to improve the accuracy of landmarks. The model attitude angle acquisition method is verified by experimental measurements of a wind-wave tank model with a 1:50 Spar-type floating wind turbine model, the results show that the point measurement accuracy can reach sub-millimeter level, and the difference between the attitude angle measurement value and the theoretical value is less than 2.34′, which meets the testing requirements. The method proposed can be further extended to the attitude angle measurement in various wind tunnel pool tests.
- Martinez-Luengo M, Kolios A, Wang L. Structural health monitoring of offshore wind turbines: A review through the Statistical Pattern Recognition Paradigm[J]. Renewable and Sustainable Energy Reviews, 2016, 64: 91-105.Google ScholarCross Ref
- Beyer F, Choisnet T, Kretschmer M, Coupled MBS-CFD simulation of the IDEOL floating offshore wind turbine foundation compared to wave tank model test data[C]//The Twenty-fifth International Ocean and Polar Engineering Conference. OnePetro, 2015.Google Scholar
- Bouabdallah S. Design and control of quadrotors with application to autonomous flying[R]. Epfl, 2007.Google Scholar
- Ziying Y, Hong G, Wenhao J. Design and implementation of a MEMS-based attitude angle measuring system for moving objects[C]//2021 IEEE International Conference on Power, Intelligent Computing and Systems (ICPICS). IEEE, 2021: 145-149.Google Scholar
- Bai X, Yang G, Liu Y, Design and Implementation of Ship Motion Model Based on the Semi-physical Simulation System[C]//2016 3rd International Conference on Information Science and Control Engineering (ICISCE). IEEE, 2016: 909-913.Google Scholar
- WANG Yue, FU Xiya, A Research on the Wave Stability of Prefabricated SEMI Floating Bucket Foundation [J]. Naval Architecture and Ocean Engineering, 2021, 37(02):13-19.Google Scholar
- LI Mu Guo, .HAN Bing. Research on non-contact buoy 6-DOF detection system [J]. Journal of Dalian University of Technology, 2004(01):114-117.Google Scholar
- Liu X, Tong X, Yin X, Videogrammetric technique for three-dimensional structural progressive collapse measurement[J]. Measurement, 2015, 63: 87-99.Google ScholarCross Ref
- Chen R, Li Z, Zhong K, Low-speed-camera-array-based high-speed three-dimensional deformation measurement method: Principle, validation, and application[J]. Optics and Lasers in Engineering, 2018, 107: 21-27.Google ScholarCross Ref
- Mohanty N K, Nayak R K. A survey on update parameters of nonlinear conjugate gradient methods[J]. International Journal of Mathematical Modelling and Numerical Optimisation, 2021, 11(3): 292-325.Google ScholarCross Ref
- Li Jun yi. Research on GPS Attitude Measurement and Related Technology [D]. PLA Information Engineering University, 2004.Google Scholar
- Heller V. Scale effects in physical hydraulic engineering models[J]. Journal of Hydraulic Research, 2011, 49(3): 293-306.Google ScholarCross Ref
Index Terms
- High-speed Video Measurement Method of Attitude Angle Applied to Floating Offshore Wind Turbine Model Wind-Wave Tank Test
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