Subspace identification of wind turbine shaft vibrations measured with a piezoelectric sensor

Dominik Kujawa, Tomasz Zawadzki


The paper presents a new approach to the parameter identification of a wind turbine shaft vibrations measured with piezoelectric sensor. The system order and unknown processes matrices are determined using the wind force as the model input and wind turbine shaft vibrations as the model output. The identified model can be used to estimate the shaft vibrations and design an early damage monitoring system. The real system results have been presented.


state space models; subspace methods; identification algorithms; parameter estimation

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