Phase and performance analysis for TMD control systems

作者：Liu Liang Kun; Tan Ping^*; Li Xiang Xiu; Zhang Ying; Zhou Fu Lin

来源：Journal of Vibration and Shock, 2015, 34(11): 160-165.

DOI：10.13465/j.cnki.jvs.2015.11.028

• Equivalent damping ratios
• Phase difference
• Structural control
• Theory of phase energy
• Tmd systems

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.

• 出版日期2015
• 单位北京大学