Active Control of Large Scale Structure Systems under Earthquake Excitations

地震激励下大型结构系统的主动控制

• 批准号: 62550335
• 负责人: TOKI Kenzo
• 金额: $ 1.34万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1987
• 资助国家: 日本
• 起止时间: 1987 至 1988
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-62550335/
• 关键词: Optimal control; Closed-open-loop control; Seismic excitation; Nonlinearity; Dynamic soil-structure interaction; 作用時間遅れ; 地下逸散減衰特性; 複素剛性; 免震構造物; 滑動・剥離現象; 地震エネルギー; 自動制御; 復元力特性; ループ制御; 免震材料; 剥離・滑動現象; 人力地震動; 動的破壊規範; 累積履歴消費エネルギー; 最大靱性率

A critical review of classical optimal control algorithms is made withrespect to the specific application of structural control under seismic excitations. With the earthquake ground acceleration being the major source of continuous external disturbances, the Riccati closed-loop control does not satisfy the optimal condition. A new instantaneous closed-open-loop optimal control algorithms is proposed herein, which is derived by minimizing the sum of the quadratic time-dependent performance index and the input seismic energy to the structure system. This new control law is developed for providing feasible control algorithms that can easily be implemented for applications to seismic-excited structures.In this report we developed tree optimal control algorithms taking into account the non-linearity of structure system, the dynamic soil-structure interaction effect and the effect of time delay for applying contorol force to the structural system. Subjected to general dynamic loads, these optimal algorithms are simple and reliable for on-line control operations and they are effective for a structural system with base isolation mechanism. We investigate in detal the control efficiency which is affected by the two weighting matrics included in the performance index. Numerical examples are worked out to demonstrate the control efficiency of the proposed control algorithm.

针对地震作用下结构控制的具体应用，对经典最优控制算法进行了评述。当地震地面加速度作为连续外扰的主要来源时，Riccati闭环控制不满足最优条件。本文提出了一种新的瞬时闭环开环最优控制算法，该算法通过最小化结构系统的二次时变性能指标和输入地震能量之和来推导。本文提出了三种最优控制算法，分别考虑了结构系统的非线性、土-结构动力相互作用效应和控制力作用的时滞效应。在一般动荷载作用下，这些优化算法简单可靠，可用于在线控制，对基础隔震结构体系是有效的。详细研究了性能指标中两个加权矩阵对控制效率的影响。数值算例验证了该控制算法的有效性。

项目成果

Kenzo TOKI: Earthquake Engineering and Structural Dynamics. Vol.15. 945-961 (1987)

Kenzo TOKI：地震工程和结构动力学。

Kenzo TOKI: Proc.of 3rd International Conference on Soil Dynamics and Earthquake Engineering. Vol.43. 73-87 (1987)

Kenzo TOKI：第三届土壤动力学和地震工程国际会议论文集。

土岐憲三: 京都大学防災研究所年報. 第31号B-2. 23-38 (1988)

Kenzo Toki：京都大学防灾研究所年度报告第 31 B-2 号（1988 年）。

佐藤忠信: 第2回計算力学シンポジウム報文集. 281-286 (1988)

佐藤忠信：第二届计算力学研讨会论文集 281-286 (1988)。

土岐憲三: 京都大学防災研究所. 第31号B-2. 1-21 (1988)

Kenzo Toki：京都大学防灾研究所第 31 B-21 (1988)。