Structural health monitoring (SHM) of wind turbines has been applied in the wind energy industry to obtain their real-time vibration parameters and to ensure their optimum performance. For SHM, the accuracy of its results and the efficiency of its measurement methodology and data processing algorithm are the two major concerns. Selection of proper measurement parameters could improve such accuracy and efficiency. The Stochastic Subspace Identification (SSI) is a widely used data processing algorithm for SHM. This research discussed the accuracy and efficiency of SHM using SSI method to identify vibration parameters of on-line wind turbine towers. Proper measurement parameters, such as optimum measurement duration, are recommended.
Kaoshan Dai, Ying Wang, Wensheng Lu, Jianze Wang, Xiaosong Ren, and Zhenhua Huang, "Investigation of the stochastic subspace identification method for on-line wind turbine tower monitoring," Proc. SPIE 10169, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, and Civil Infrastructure 2017, 101692F (Presented at SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring: March 30, 2017; Published: 19 April 2017); https://doi.org/10.1117/12.2259759.
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