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基于时频分析的半主动TMD风振控制研究初探
发表时间：2010-01-31 浏览量：2331 下载量：992
| 全部作者： | 尹飞，谭平，黄东阳，周福霖 |
| 作者单位： | 广州大学工程抗震研究中心；哈尔滨工业大学深圳研究生院 |
| 摘 要： | 利用短时最大熵谱谱阵分析方法（maximum entropy method, MEM）识别风振作用下的结构振动这种变频信号在较短时间序列中的时频-功率谱特性调整调谐装置的振动频率，提出基于时频分析的半主动（semi-active, SA）调谐减振控制策略，以达到更优异的减振效果。采用自回归（auto-regressive, AR）模型模拟了基于Davenport谱的脉动风速时程，运用基于时频分析的半主动变刚度调谐减振控制策略，选取一幢26层、103.5 m高的高层建筑为仿真算例，结果表明控制效果良好，明显优于被动调谐质量阻尼器（tuned mass damper, TMD）。 |
| 关 键 词： | 工程结构；时频分析；半主动变刚度调谐质量阻尼器；高层建筑；风振控制 |
| Title： | Preliminary research of Semi-Active-TMD based on time-frequency analysis in wind-excited control |
| Author： | YIN Fei, TAN Ping, HUANG Dongyang, ZHOU Fulin |
| Organization： | Earthquake Engineering Research Test Center, Guangzhou University；Shenzhen Graduate School, Harbin Institute of Technology |
| Abstract： | This paper proposes a novel tuned control strategy for SA-TMD based on time-frequency analysis. Short time maximum entropy methods were used to identify the time-frequency-power spectrum of the structure vibration signal which is frequency variable on real-time. It is effective to adjust the frequency of the tuned device according to this measure. Fluctuating wind was simulated by AR model based on Davenport spectrum. Selected a 26-storey, 103.5-meter-high high-rise building controlled by SA base on time-frequency analysis control strategy. The numerical simulation result shows good effect, and much better than a passive tuned mass damper(TMD). |
| Key words： | engineering structures; time-frequency analysis; semi-active variable stiffness tuned; high-rise building; wind control |
| 发表期数： | 2010年1月第2期 |
| 引用格式： | 尹飞，谭平，黄东阳，等. 基于时频分析的半主动TMD风振控制研究初探[J]. 中国科技论文在线精品论文，2010，3（2）：128-132. |
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