多约束条件下结构振动系统的容错控制  

Fault-tolerant control for a structural vibration system with multi-constraint

作　　者：孙金龙[1] 滕青芳[1,2] 王国林[3] 范多旺[2] 

机构地区：[1]兰州交通大学自动化与电气工程学院,兰州730070 [2]兰州交通大学光电技术与智能控制教育部重点实验室,兰州730070 [3]东南大学土木工程学院,南京210096

出　　处：《振动与冲击》2010年第2期69-74,共6页Journal of Vibration and Shock

基　　金：长江学者和创新团队发展计划资助(No.IRT0629);甘肃省自然科学基金资助(3ZS061-A25-044)

摘　　要：现代控制理论在工程结构振动领域中的应用性不强,主要是因为其考虑的实际约束条件太少,就该问题进行了研究。首先根据建筑结构力学原理,建立了包含控制输入滞后、执行器故障、参数不确定等的结构系统状态模型。然后基于状态反馈和线性矩阵不等式处理方法给出了一个可满足多约束条件的时滞依赖型鲁棒H∞容错主动控制算法。通过对一个四自由度建筑结构模型在EI Centro地震波作用下振动的主动控制仿真,验证了该方法的可行性,可用于工程结构的振动控制。Application of modern control theory in field of engineering structure vibration is not strong mainly because few considerations of actual constraints are taken.According to structural dynamics theory,a state-space model containing input time-varying delay,actuator failure,parameter uncertain,etc.was established.The model parameters were appropriately dealt with to lower the conservation.A robust H∞ reliable active control algorithm for multi-constraint was also proposed based on both state feedback and LMI approaches.Finally,a building model with four degrees of freedom subjected to EI Centro earthquake wave was simulated and studied utilizing the algorithm,and the results showed that the proposed method is feasible and thus can be used to control vibration of engineering structures.

关 键 词：结构振动 应用性 鲁棒H∞容错控制 时滞相关 执行器失效 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]