斜拉索横向振动的积分应变反馈控制实验研究

Experimental Study on the Control of Stayed-Cables' Vibration with Integral Strain Feedback(ISF) Control Method

提出采用积分应变反馈控制方法对斜拉索平面内多模态横向振动实施主动控制，采用粘贴在拉索表面的ＰＶＤＦ压电薄膜传感拉索横向振动时的动态应变信号． 文中介绍了实验系统的组成、特点、在斜拉索比例模型上的实验研究工作以及主动控制的实验结果． 理论与实验研究结果表明积分应变反馈控制方法能明显衰减斜拉索横向振动，避免模态截断引起的溢出问题，而且控制系统实现容易、易实用化．

An active control method based on Integral Strain Feedback (ISP) principle and used for the vibration control of stayed cables is presented, and also the method for sensing the dynamic strains with PVDF piezoelectric films struck on the surface of cables. An experiment on the proportional model of a stayed cable is given and explained. The results show that the ISF control method can effectively suppress the stayed cable's transverse vibration, and that the method is easy to conduct.