On the vibration suppression of power lines using mobile damping robots
On the vibration suppression of power lines using mobile damping robots
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DOI：
10.1016/j.engstruct.2021.112312
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发表时间：
2021-04-19
影响因子：
5.5
通讯作者：
Barry, Oumar
中科院分区：
文献类型：
--
作者：
Kakou, Paul;Bukhari, Mohammad;Barry, Oumar
固定的被动调谐吸振器（TVA）在控制连续系统（例如，电力线）。这是因为固定的无源TVA不仅是窄带的，而且它们也不能适应变化的风特性，因此不能在振动回路的波腹处重新定位自己。为了解决这个问题，本文提出了一种移动的吸振器（即移动的阻尼机器人）能够自调整到波腹。本文的研究主要集中在电力线的振动抑制上，但也可以推广到其他连续系统。移动的阻尼机器人连接到经受预张力和风力的单个导体。利用汉密尔顿原理得到了运动的控制方程。一个控制力被纳入数学公式，用于驱动机器人的波腹位置的基础上的风激励频率。此外，机器人和电缆之间的双向非线性耦合被认为是。数值仿真表明，移动的阻尼机器人显著提高了电力线的振动抑制。进行参数研究，以确定关键的设计参数对性能的移动的阻尼机器人的影响。
Fixed passive tuned vibration absorbers (TVA) are ineffective in controlling wind induced vibration of continuous systems (e.g., power lines). This is because fixed passive TVAs are not only narrowband, but they are also unable to adapt to changing wind characteristics, and thus are unable to reposition themselves at antinodes of the vibrating loop. To tackle this issue, this paper proposes a mobile vibration absorber (i.e, mobile damping robot) capable of self-adjustment to antinodes. The study focuses on power lines vibration suppression, but it can be extended to other continuous systems. The mobile damping robot is connected to a single conductor that is subjected to a pretension and a wind force. The governing equations of motion are obtained using Hamilton's principle. A control force is incorporated in the mathematical formulation for driving the robot to the antinode location based on the wind excitation frequency. Also, the two-way nonlinear coupling between the robot and cable is considered. Numerical simulations indicate that the mobile damping robot significantly improves the vibration suppression of the power line. Parametric studies are carried out to determine the influence of key design parameters on the performance of the mobile damping robot.