非线性基准建筑物迭代LQG控制方法研究  

Iteration LQG Control Method of Nonlinear Benchmark Buildings

作　　者：陈道政[1] 

机构地区：[1]合肥工业大学,合肥230009

出　　处：《应用力学学报》2009年第3期480-484,共5页Chinese Journal of Applied Mechanics

基　　金：江苏省自然科学基金(BK2003083)

摘　　要：由于K费用累积控制策略在控制器设计过程需要对系统进行平衡处理,并且其性能指标的加权矩阵也须由系统的可控性/可观性格拉姆矩阵来确定,所以对降阶方法具有依赖性。为此本文的目的是提出了一种适合于普通降阶方法的迭代LQG控制策略。方法是让其控制器设计与模型降阶脱离,迭代过程采用得是一阶特征函数。所以控制器设计相对KCC方法要简单且适用范围更广。在确定控制器设计参数后,考虑到控制效果并不理想,本文又提出了附加增益的概念。最后以三层基准建筑物为例给出仿真分析,结果表明本文方法是有效的。The balanced transaction is needed in the course of controller design of k-cost-cumulant(KCC) control strategy, meanwhile, the determination of weight matrices of performance index also rely on the systemic controllability/observability Gramian matrices, which leads to the dependence of the control strategy to reducedmethod. An iteration LQG control strategy is presented, the controller design disconnect with chosen reduced method and only use the first characteristic function. Comparing the KCC control strategy, the proposed method is simpler with an extensive applicability. Furthermore, an accessional gain concept is presented to ensure the systematic control effect. A 3-storey benchmark structure is taken to demonstrate the feasibility of the proposed method.

关 键 词：基准结构 迭代LQG KCC控制 附加增益 

分 类 号：TU311.3[建筑科学—结构工程] TP273.1[自动化与计算机技术—检测技术与自动化装置]