本文選題：結(jié)構(gòu)控制 + 非光滑控制�。� 參考：《地震工程與工程振動(dòng)》2016年05期

【摘要】：針對(duì)地震波對(duì)建筑結(jié)構(gòu)振動(dòng)性能的影響,應(yīng)用非光滑控制算法抑制該振動(dòng)。首先根據(jù)李亞普若夫穩(wěn)定性理論和齊次系統(tǒng)有限時(shí)間穩(wěn)定理論,論證了所設(shè)計(jì)控制算法能夠?qū)崿F(xiàn)建筑結(jié)構(gòu)振動(dòng)的有限時(shí)間穩(wěn)定。在考慮模型帶有5%結(jié)構(gòu)參數(shù)不確定性的基礎(chǔ)上,對(duì)1幢受地震沖擊的3層建筑進(jìn)行數(shù)值仿真,對(duì)比分析了無(wú)控制、LQG控制和非光滑控制條件下的振動(dòng)情形。為了防止控制器出力過(guò)大造成建筑結(jié)構(gòu)的破壞和實(shí)際難以實(shí)現(xiàn),仿真中對(duì)控制力幅值全部加以限制。仿真結(jié)果表明,所設(shè)計(jì)的非光滑控制算法可使系統(tǒng)在有限時(shí)間內(nèi)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(xué)機(jī)械與電氣工程學(xué)院;哈爾濱工業(yè)大學(xué)航天學(xué)院;廣州大學(xué)工程抗震研究中心;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(51478132)~~
【分類(lèi)號(hào)】：TU352.1
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本文編號(hào)：2049172