基于转动惯性双调谐质量阻尼器的高杆灯风振控制研究

Research on Wind-induced Vibration Control of High Mast Lighting Based on RIDTMD

对转动惯性双调谐质量阻尼器(RIDTMD)对高杆灯的风致振动控制进行了研究。考虑风与结构的耦合作用,建立了设有该控制装置的受控系统动力方程,通过算例从时域和频域两方面对RIDTMD的减振性能进行了分析。结果表明,该装置能以较小的附加质量实现对高杆灯的振动控制,控制效果优良。同时对RIDTMD阻尼器的参数取值问题进行了探讨,得到了阻尼器的最优结构参数。且所提受控高杆灯的频域分析方法计算快、效率高,对于高杆灯控制策略确定、参数优化、疲劳分析等具有重要意义。

The wind-induced vibration control of high mast lighting by RIDTMD was studied.Considering the coupling effect of wind and structure,the dynamic equation of the controlled system with RIDTMD was established.The vibration reduction performance of RIDTMD was analyzed in both time and frequency domain through numerical example.The results show that the RIDTMD can control the wind-induced vibration of high mast lighting with small additional mass,and the control effect is excellent.The parameter selection of the RIDTMD was discussed,and the optimal structural parameters of the damper was obtained.The frequency domain analysis method of controlled high mast lighting is fast and efficient,which is of great significance to the determination of control strategy,parameter optimization and fatigue analysis of high mast lighting.