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

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 processesmatrices are determined using the wind force as the model input and wind turbine shaft vibrations as the model output. Theidentified model can be used to estimate the shaft vibrations and design an early damage monitoring system. The real systemresults have been presented.

Keywords:

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