针对海上浮式风力机的振动控制问题,将调谐质量阻尼器（TMD）安装于海上浮式风力机的机舱中,基于固定时间方法提出一种高效精准的减振控制方法。根据拉格朗日方程,建立海上浮式风力机的耦合动力学模型。为处理风浪干扰的不利影响,构造一种固定时间非线性干扰观测器对风浪干扰分别进行精确估计与补偿。在此基础上,引入中间控制输入解决欠驱动问题,针对海上浮式风力机的子系统分别设计一种固定时间主动减振控制器,以实现对海上浮式风力机高效的振动抑制,并借助Lyapunov方法证明闭环系统是固定时间稳定的。仿真结果验证所设计干扰观测器与减振控制器的可行性和有效性。
Abstract
The vibration control issue of an offshore floating wind turbine is considered, an efficient and precise vibration control method is proposed based on the fixed-time approach, where the tuned mass damper （TMD） is installed in the nacelle of the offshore floating wind turbine. A coupled dynamic model of the offshore floating wind turbine is established according to the Lagrange equations. To address the adverse effects of wind and wave disturbances, a fixed-time nonlinear disturbance observer is constructed to accurately estimate and compensate the wind and wave disturbances separately. Based on this, the intermediate control inputs are introduced to solve the underactuated problem, and a fixed-time active vibration controller is designed for each subsystem of the offshore floating wind turbine to achieve the efficient vibration suppression. The fixed-time stability of the closed-loop system is proven by using Lyapunov methods. Simulation results are provided to verify the feasibility and effectiveness of the designed disturbance observer and vibration reduction controller.
关键词
浮式风力机 /
振动控制 /
干扰抑制 /
固定时间控制 /
调谐质量阻尼器 /
固定时间收敛 /
干扰观测器
Key words
floating wind turbines /
vibration control /
disturbance rejection /
fixed-time control /
tuned mass damper（TMD） /
fixed-time convergence /
disturbance observer
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基金
中国博士后科学基金（2022M721344）; 2025年广东省级大学生创新创业训练计划支持项目（S202510559116）
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