LiDAR-based displacement measurement and data decoupling method for biaxial fatigue testing of wind turbine blades.

Applied optics Pub Date : 2025-09-20 DOI:10.1364/AO.571730
Aiguo Zhou, Yikun Shang, Jinlei Shi, Yutian Zhu, Xiufeng Xu
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Abstract

To improve the efficiency of wind turbine blade fatigue testing, a displacement measurement method for wind turbine blades based on LiDAR is proposed, which is suitable for biaxial fatigue testing of wind turbine blades. By utilizing the geometric characteristics of retroreflective targets captured by the LiDAR, the position of target points is determined, and the displacement of these points during testing is calculated. The feasibility of this method is verified through static and dynamic experiments, with experimental results showing that the distance measurement error is controlled within 5%. This method requires low point cloud density from the LiDAR and offers advantages such as minimal environmental impact and non-contact measurement. Additionally, an optimization-based vibration parameter calculation method is proposed, which can accurately compute vibration parameters such as frequency and phase. By decoupling the data using vibration parameters, this approach provides additional data support for the fatigue testing of wind turbine blades.

基于激光雷达的风力机叶片双轴疲劳试验位移测量与数据解耦方法。
为了提高风电叶片疲劳测试的效率,提出了一种基于激光雷达的风电叶片位移测量方法,该方法适用于风电叶片双轴疲劳测试。利用激光雷达捕获的反反射目标的几何特征,确定目标点的位置,并计算这些点在测试过程中的位移。通过静态和动态实验验证了该方法的可行性,实验结果表明,距离测量误差控制在5%以内。这种方法需要激光雷达的低点云密度,并具有诸如对环境影响最小和非接触式测量等优点。此外,提出了一种基于优化的振动参数计算方法,该方法能够准确计算频率、相位等振动参数。该方法利用振动参数对数据进行解耦,为风电叶片疲劳试验提供了额外的数据支持。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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