| 地震下结构振动的最优控制算法模型比较与改进 |
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| 引用本文： | 杜永峰,李慧.地震下结构振动的最优控制算法模型比较与改进[J].世界地震工程,2005,21(3):57-63. |
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| 作者姓名： | 杜永峰 李慧 |
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| 作者单位： | 兰州理工大学,防震减灾研究所,甘肃,兰州,730050 |
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| 基金项目： | 甘肃省自然科学基金（ZS021-A25-015-G）资助项目.美国伊利诺伊大学Spencer B F Jr教授曾邀请本文第一作者在其实验室做访问学者,并为参与智能隔震试验提供了方便,本文写作过程中也曾就本算法与Spencer教授进行过有益的讨论,在此表示衷心感谢. |
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| 摘 要： | 模拟地震激励输入结构的过程，将控制目标函数化解到每个时间步长上。用激励所产生的脉冲响应重新构造控制目标函数，直接从泛函变分出发，推导出了一种改进的最优控制算法，并用状态转移的数值方法加以实现。从概念上讲，本算法是一种更为合理的结构最优控制算法。算例表明，在相同控制能量下，本算法能更有效地削减响应峰值，且稳定性良好。
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| 关 键 词： | 结构动力反应 控制算法 智能隔震 最优控制 地震工程 |
| 文章编号： | 1007-6069(2005)03-0057-07 |
| 收稿时间： | 2005-03-23 |
| 修稿时间： | 2005-06-18 |
Comparison and improvement of models of optimal control algorithms for dynamical response of structures under earthquakes |
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| DU Yong-feng,LI Hui.Comparison and improvement of models of optimal control algorithms for dynamical response of structures under earthquakes[J].World Information On Earthquake Engineering,2005,21(3):57-63. |
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| Authors: | DU Yong-feng LI Hui |
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| Abstract: | In this paper several models of optimal control algorithms for dynamical response of structures subjected to earthquake excitation are compared, and a new optimal control algorithm is proposed. The performance index is expressed by using impulse response at each time step, for simulating an earthquake wave which is input to a strucutre. An improved optimal control algorithm is derived by directly performing functional analysis, and it is realized by using the numerical method of state transition. The proposed algorithm is more reasonable in terms of concept for structural vibration control. The numerical example shows that the proposed method is more efficient for cutting off the peak response and has good stability under the same comtrol energy. |
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| Keywords: | dynamical response of structures control algorithms smart base isolation optimal control earthquake engineering simulation |
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