智能风力机叶片振动主动控制研究综述

The review for elastomer smart active wind turbine blade vibration control

风力机叶片是一个细长柔性体,承受多种交变力的作用,其可靠性受到越来越多的关注,现有风力机叶片的被动式控制很难适应风力机叶片大型化发展的要求,针对智能结构的风力机叶片主动控制的研究越来越受到重视。本文对智能风力机叶片的振动主动控制问题进行了综述,包括结构设计、不同智能材料选用及各类控制算法(如直接速度控制、状态空间控制、神经网络控制、前馈控制、自适应控制等不同的控制策略)的运用等。现有的研究存在不同程度的不足:1叶片智能结构设计不足;2智能风力机叶片的理论建模不足;3针对风力机叶片的振动主动控制技术有待完善。今后应加强以上方面的研究力度。

Wind turbine blade is an elongated flexible body, exposed to a variety of alternating forces, whose reliability are focused with more and more attention. The existing passive control is difficult to meet the requirements of large-scale development of wind turbine blades. In view of that, the idea of intelligent structure design originated from aircraft blade is being researched and applied to wind turbine blades. Vibration controls of wind turbine blades reviewed in the paper, including the use of different smart materials, in particular, the different control strategies such as, the direct speed control, the state and space control, neural network control, feedforward control and adaptive control, and so on. Finally, the trend of further development of smart wind turbine blade is discussed.