基于土木结构递阶分散控制的稳定性研究

Study on the Civil Engineering Structural Stabilization Control with Hierarchical Decentralized Method

采用递阶分散控制的方法对土木结构进行振动控制,同时结构满足稳定性要求。控制作用分为局部和全局控制两级,局部控制器对子结构的振动控制,用李雅普诺夫方法来获得子结构稳定,而全局控制器来减小子结构之间相互作用而保证结构全局稳定性。对悬臂梁结构进行了控制稳定性仿真分析,将振动仿真结果与集中控制的结果进行对比分析。结果表明,基于递阶分散的控制方法保证大型土木结构的稳定性。

This paper considers the problem of achieving stability for civil engineering structure by hierarchical decentralized control strategy. At the same time,the vibration of the structure is controlled. In this approach,the structure to be controlled is divided into a set of substructures,and control consists of two levels： the low-level substructure is controlled independently by local controllers and local information,the stability of the substructures is gotten by the Lyapunov method,and the high-level global control system,which takes the outputs of every substructure as its input,and eliminates interconnection among substructures to ensure the all structure stability. Simulated results show that hierarchical decentralized control method has a good control effect with stabilization compared with the centralized control method. The study in this paper presents a promising means for the large scale civil engineering structural stabilization control.