利用光纤光栅传感器监测小型风力发电机叶片

Chang-Hwan Kim, I. Paek, N. Yoo
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引用次数: 12

摘要

对某小型风力机叶片的动力特性进行了实验分析。利用光纤布拉格光栅(FBG)传感器阵列和应变片阵列提取了由纤维增强塑料(FRP)制成的小型风力涡轮机叶片的模态振型。叶片根部通过为本研究开发的悬臂系统固定,并测量了连接在叶片顶部和底部表面的传感器的动态应变。两种传感器测得的叶片悬臂系统的基频和高模态几乎相同。模态振型也很接近,但彼此之间略有不同。考虑差异是因为顶部和底部部分是非对称的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Monitoring of small wind turbine blade using FBG sensors
Dynamic behavior of a small wind turbine blade has been analyzed experimentally. Arrays of Fiber Bragg Grating (FBG) sensors and strain gauges were used to extract mode shapes of a small wind turbine blade made of fiber reinforced plastic (FRP). The root of the blade was fixed by a cantilever system developed for this study and dynamic strains from the sensors attached from the top and bottom surfaces of the blade were measured. The fundamental frequencies and higher modes of the blade cantilever system obtained from both sensors were almost identical. The mode shapes were also close but slightly different from each other. The differences are considered due to the fact that the top and bottom sections are non-symmetric.
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