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A disturbance accommodating Linear Quadratic Regulator (LQR) method was applied in pitch control system to achieve good performance. The disturbance can be estimate by designing state estimator, and a feedback was added into the input to eliminate disturbance effect. The feed back matrix was calculated in accordance to LQR theory. A wind turbine dynamic modal was set up, and simulation of the control system was preformed based on Matlab7.1/simulink. The simulation results show that the controller ensure pitch control actuator little fatigue, and has smaller overshoot. The proposed method is has better performance and easy to realize.
Intelligent Information Technology Application, 2008. IITA '08. Second International Symposium on (Volume:1 )
Date of Conference: 20-22 Dec. 2008