摘要
针对近海风机实施调谐质量阻尼器(TMD)振动控制时出现的频率失调问题,在考虑风机机舱空间受限性的基础上,提出了一种基于碰撞式磁流变弹性体的调谐质量半主动控制器(MREPTMD),对其在多载荷作用下的振动进行控制。将传统TMD中的弹簧和阻尼元件用MRE代替,利用其刚度和阻尼可以随磁场发生变化的特性,引入半主动控制技术使其跟踪并适应风机频率的变化,同时通过使用黏弹性材料制作的挡板限制质量块的移动来减小装置尺寸,构成智能高效、空间可控的半主动耗能减振器。建立了设有该装置的近海风机在多载荷作用下的受控方程,分析了其减振性能和参数影响,并与传统TMD和PTMD进行了对比。结果表明:该装置能通过对结构的反应实时跟踪,主动调节控制参数,保持对风机结构的最优控制,控制效果均优于传统TMD和PTMD,具有很强的适应性。
Regarding the problem of frequency imbalance in the vibration control of offshore wind turbines with tuned mass damper(TMD),a semi-active tuned mass damper based on magnetorheological elastomer considering pounding energy dissipation(MREPTMD)was proposed to control the vibration of offshore wind turbines under multi-loads considering the space limitation of wind turbine nacelle.The spring and damping elements in the traditional TMD were replaced by MRE,and the semi-active control technology was introduced to track and adapt to the change of wind turbine frequency by using the characteristics that its stiffness and damping could change with the magnetic field.At the same time,the size of the device was reduced by using a baffle made of viscoelastic material to restrict the movement of the damper mass,and the semi-active energy dissipation damper with high intelligence and controllable space was formed.The control equation of the offshore wind turbine equipped with the device under multiple loads was established,and its vibration reduction performance and parameter influence were analyzed and compared with the traditional TMD and PTMD.The results show that the device can track the structural dynamic response in real-time,actively adjust the control parameters,and maintain the optimal control of the wind turbine structure.The control effect is better than that of traditional TMD and PTMD and demonstrating strong adaptability.
作者
李书进
高扬
柳宇轩
LI Shujin;GAO Yang;LIU Yuxuan(School of Civil Engineering and Architecture,Wuhan University of Technology,Wuhan 430070,Hubei,China)
出处
《建筑科学与工程学报》
北大核心
2025年第4期1-9,共9页
Journal of Architecture and Civil Engineering
基金
国家自然科学基金项目(52378313)
国家大学生创新创业训练计划项目(202310497084)。
关键词
近海风机
半主动控制
调谐质量阻尼器
磁流变弹性体
碰撞耗能
offshore wind turbine
semi-active control
tuned mass damper
magnetorheological elastomer
impact energy dissipation
