發(fā)布時間：2018-06-21 15:07

  本文選題：結構控制 + 非光滑控制��； 參考：《地震工程與工程振動》2016年05期

【摘要】：針對地震波對建筑結構振動性能的影響,應用非光滑控制算法抑制該振動。首先根據李亞普若夫穩(wěn)定性理論和齊次系統(tǒng)有限時間穩(wěn)定理論,論證了所設計控制算法能夠實現(xiàn)建筑結構振動的有限時間穩(wěn)定。在考慮模型帶有5%結構參數不確定性的基礎上,對1幢受地震沖擊的3層建筑進行數值仿真,對比分析了無控制、LQG控制和非光滑控制條件下的振動情形。為了防止控制器出力過大造成建筑結構的破壞和實際難以實現(xiàn),仿真中對控制力幅值全部加以限制。仿真結果表明,所設計的非光滑控制算法可使系統(tǒng)在有限時間內穩(wěn)定,并具有良好的抗震性能和魯棒性。
[Abstract]:Aiming at the influence of seismic wave on the vibration performance of building structure, the non-smooth control algorithm is applied to suppress the vibration. Firstly, according to the Lyapunov stability theory and the finite time stability theory of homogeneous systems, it is proved that the proposed control algorithm can realize the finite time stability of structural vibration. On the basis of considering the uncertainty of the model with 5% structural parameters, the numerical simulation of a three-story building subjected to earthquake shock is carried out, and the vibration conditions under the condition of uncontrolled LQG control and non-smooth control are compared and analyzed. In order to prevent the failure of the building structure caused by the excessive output of the controller and the difficulty in practice, the amplitude of the control force is restricted in the simulation. The simulation results show that the designed non-smooth control algorithm can make the system stable in finite time and has good seismic performance and robustness.
【作者單位】： 廣州大學機械與電氣工程學院;哈爾濱工業(yè)大學航天學院;廣州大學工程抗震研究中心;
【基金】：國家自然科學基金項目(51478132)~~
【分類號】：TU352.1
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本文編號：2049172