摘要
针对结构系统连接处物理参数具有时变特性,本文提出一种用于结构连接处时变物理参数在线辨识方法。在工程中,结构连接处的响应往往是很难测量的,对于这种情况,本文提出了时域子结构法,直接利用工程中测得的时域响应信号计算结构连接处的响应。将系统方程利用方波脉冲函数展开后,根据方波脉冲函数的脱关性推导出结构连接处时变物理参数在线辨识的递推算法,仿真算例表明,此算法具有较高的计算精度与良好的跟踪效果。
In the paper, aim at time- varying characteristic of physical parameters of the structure joint, an online identification method of time-varying parameters of structure joint is presented. In the practical engineering, it is difficult to test the response of structure joint, so a time field substructure method is presented to solve the problem. The method use response that can be tested straightly to compute response of structure joint. After the system dynamic equation is expressed by block- pulse function...
出处
《微计算机信息》
北大核心
2008年第10期256-257,共2页
Control & Automation
基金
教育部重点资助项目(104043)
关键词
时域子结构法
物理参数辨识
时变系统在线辨识
方波脉冲函数
time field substructure method
physical parameters identification
online identification of time- varying system
block- pulse function
