基于IMC-PID控制的风机叶片颤振控制研究

摘要

In order to solve the problem that the flutter of wind turbine blade seriously influences the wind turbine operation safety and power generation efficiency,a vibration control method based on IMC-PID is designed,which can effiectively suppress the blade flutter and obtain good closed-loop dynamic characteristics with only a few adjusting control parameters.First,the recursive least square method is adopted for reducing the model order.Then,the controller is designed based on IMC-PID.Simulation results show that the IMC-PID controller has better dynamic performance and robustness than the traditional PID controller with less adjusting parameters in the blade flutter control system.%针对风机叶片在颤振情况下严重影响风机的运行安全和发电效率的问题,设计了一种基于内模PID控制(IMC-PID)的振动控制方法,仅需调节较少控制器参数,就能有效地抑制叶片颤振并获得良好的闭环动态特性.首先使用递推最小二乘法对高阶对象模型进行降阶,然后利用IMC-PID方法设计控制器.仿真结果表明:在风机叶片颤振控制中,IMC-PID控制器与传统PID控制器相比,控制器整定参数少,且具有更好的动态特性和鲁棒性.