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<p>A dynamic mode identification method based on camera measurements is proposed to capture dynamic information of wind turbine blades. To collect blade dynamic data, a dynamic photogrammetry experimental platform for wind turbine blades has been developed. This platform employs binocular imaging to capture dynamic blade images, followed by target detection and subpixel positioning. By combining camera parameters with three-dimensional image reconstruction, the global spatial coordinates of the blade targets are determined. Fourier transformation of the time-domain response is then applied to extract dynamic mode parameters of the blade. To verify the effectiveness of the proposed method, the dynamic photogrammetry results are compared with finite element simulation data, revealing a discrepancy of less than 10%, thereby confirming the method’s feasibility.</p>

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Dynamic mode measurement method of wind turbine blade based on binocular photogrammetry

  • 期刊论文

  • 发表日期：

    2025年4月2日

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  • Gulbahar Tohti,
  • Zhiqiang Wu,
  • Filora Turhun,
  • Mamtimin Geni,
  • Sheng Liu

摘要

A dynamic mode identification method based on camera measurements is proposed to capture dynamic information of wind turbine blades. To collect blade dynamic data, a dynamic photogrammetry experimental platform for wind turbine blades has been developed. This platform employs binocular imaging to capture dynamic blade images, followed by target detection and subpixel positioning. By combining camera parameters with three-dimensional image reconstruction, the global spatial coordinates of the blade targets are determined. Fourier transformation of the time-domain response is then applied to extract dynamic mode parameters of the blade. To verify the effectiveness of the proposed method, the dynamic photogrammetry results are compared with finite element simulation data, revealing a discrepancy of less than 10%, thereby confirming the method’s feasibility.