Journal of Theoretical
and Applied Mechanics

54, 4, pp. 1109-1123, Warsaw 2016
DOI: 10.15632/jtam-pl.54.4.1109

Implementation of the LQG controller for a wind turbine tower-nacelle model with an mr tuned vibration absorber

Maciej Rosół, Paweł Martynowicz
Vibration of a wind turbine tower is related to fatigue wear, influencing reliability of the whole structure. The current paper deals with the problem of Linear-Quadratic-Gaussian (LQG) tower vibration control using specially designed and built simulation and laboratory tower-nacelle models with a horizontally aligned, magnetorheological (MR) damper based
tuned vibration absorber located at the nacelle. Force excitation applied horizontally to the tower itself, or to the nacelle, is considered. The MR damper LQG control algorithm, including the Kalman state observer and LQR (Linear-Quadratic-Regulator) controller is analysed numerically and implemented on the laboratory ground, in comparison with the system with a deactivated absorber. Simulation and experimental results are presented.
Keywords: wind turbine tower vibration, tuned vibration absorber,MR damper, LQG control