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For highly nonlinear blades system of wind turbine,Blades dynamic mathematical model are established.Individual pitch robust adaptive controller are designed by use of backstepping control.The proposed control method introduces a robust adaptive item in the real control, by which to overcome and eliminate the impact of uncertainty on the blade system.By use of Matlab/Simulink software, wind turbine simulation platform are built, simulation results demonstrate the feasibility and effectiveness of the proposed control method,when blade system lie in parameters uncertainty and subjected to unknown unbalanced loads, the designed controller can make pitch angle of the three blades quickly track their expectation pitch angles.