TMD控制系统的相位及控制效果分析  

Phase and performance analysis for TMD control systems

作　　者：刘良坤[1] 谭平[1] 李祥秀[2] 张颖[1] 周福霖[1,2] 

机构地区：[1]广州大学工程抗震研究中心,广州510405 [2]北京工业大学建筑工程学院,北京100124

出　　处：《振动与冲击》2015年第11期160-165,共6页Journal of Vibration and Shock

基　　金：国家973项目(2012CB723304);国家基金委面上项目(51208129);国家教育部新世纪人才项目(NCET-11-0914);广州市羊城学者科技计划项目(10A032D)

摘　　要：推导了TMD系统的相位公式,研究了各参数对相位差及减震效果的影响。结果表明当TMD选取最优频率比与最优阻尼比时具有最优控制效果。TMD质量比的增大不仅有助于增加控制效果,而且提高了频域内的控制鲁棒性。此外,本文提出了相能原理并结合能量耗散相等的原理给出了TMD的等效阻尼比,该数值比白噪声激励下推导的等效阻尼比更加符合TMD系统的实际情况。Here,the phase formulas of a TMD control system were derived.The effects of parameters on phase difference and vibration reduction result were investigated.Both the frequency band of vibration reduction and the distribution of phase difference change with parameters were indicated.The results showed that the comprehensive optimal control effect of TMD is obtained with the optimal damping ratio and the optimal frequency ratio;the increase in mass ratio of TMD can improve both the control performance and control robustness.In addition,the theory of phase energy combined with the principle of energy dissipation was employed to obtain the equivalent damping ratio of TMD.It was shown that the proposed equivalent damping ratio is more reasonable than that deduced under the excitation of white noise.

关 键 词：TMD系统 相位差 结构控制 相能原理 等效阻尼比 

分 类 号：TU352.1[建筑科学—结构工程]