Development of accurate and precise measurement methodof large wind turbine blades' wind-induced responses during its operation

研究的目的是建立一种简单、准确的风力发电机组叶片在运行状态下的风致响应测量方法。采用三维运动分析软件。为了获得叶尖振动，必须设置两个高速摄像机，使其符合测量和校准的相似性。精确的坐标变换也是必要的。得到的顺风向响应有时会由于叶尖的失迹而产生误差，可能不够准确。但可以在一定程度上得到叶片的响应特性

The objective of the study is to develop a simple and accurate measurement method of the wind-induced response of wind turbine blades under its operation. A 3 dimensional motion analysis software was used. In order to obtain the blade tip vibration, two hi-speed cameras had to be set so that they conform to the similarity between the measurement and the calibration. An accurate coordinate transformation was also necessary. The obtained response in along-wind direction sometimes had error caused by miss-tracing of the blade tip, and may not be accurate enough. But the response characteristics of the blades could be obtained to some extent