摘要
研究阐述了具有不确定结构参数的两个相邻建筑物在地震激励下的混合控制方法。利用包含原理和具有保证性能控制算法的重叠分散控制策略,提出了一种不确定参数结构系统的重叠分散保性能混合控制算法。基于包含原理,将一个大尺度结构分为一组具有共同部分的成对子结构,其共同部分即重叠的部分。使用保性能算法设计每个成对子结构的控制器,然后利用收缩原理,形成原系统的控制器。将重叠分散保性能混合控制算法应用于具有不确定参数的12层和9层两个相邻建筑物的振动控制问题,并与集中的保性能振动控制方法进行了比较,两种方法下结构层间位移的最大控制率分别为50%~60%和60%~70%。数值结果表明:对于具有不确定结构参数的两个相邻建筑物,该方法可以有效地抑制结构的动力响应,确保控制系统稳定性,提高了控制器设计的灵活性和可靠性。
This study describes a hybrid control approach of two similar adjacent buildings with uncertain parameter under seismic excitations. Using the inclusion principle and the overlapping decentralized control strategy with the guaranteed cost control algorithm, an overlapping decentralized guaranteed cost hybrid control algorithm is proposed for uncertain parameter structure systems. Based on the inclusion principle, a large-scale structure is divided into a set of pair-wise substructures which share common parts, i.e., overlapping parts. The controllers are designed in each pair-wise substructure using guaranteed cost algorithm. The designed controllers are then contracted and implemented into the original system. The proposed overlapping decentralized guaranteed cost control algorithm is applied to vibration control problem of the uncertain parameter 12-story and 9-story adjacent buildings and compared with the centralized guaranteed cost vibration control approach, maximum rate of controlling inter-story displacement achieves 50%~60% and 60%~70%, respectively. The numerical simulation results show that the proposed method can effectively inhibits the seismic response of the structure for the presence of modeling uncertainties error or system itself, ensures the stability of the control system, and improves the flexibility and reliability of the controller design.
出处
《应用力学学报》
CSCD
北大核心
2017年第4期615-621,共7页
Chinese Journal of Applied Mechanics
基金
国家自然科学基金(11172087
51408178)
关键词
相邻建筑
保性能混合控制
参数不确定性
重叠分散分解
地震激励
adjacent buildings
guaranteed cost hybrid control
uncertain parameter
overlapping decentralized decomposition
seismic excitation
