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Moving vehicle load identification from bridge responses based on method of moments (MOM)

机译:基于矩量法(MOM)的桥梁响应识别移动车辆载荷

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摘要

A MOM-based algorithm (MOMA) is proposed for identifying of the time-varying moving vehicle loads on a bridge in this paper. A series of numerical simulations and experiments in laboratory have been studied and the proposed MOMA are compared with the existing time domain method (TDM). A few main parameters, such as basis function terms, executive CPU time, Nyquist fraction of digital filter, two different solutions to the ill-posed system equation, etc, have been investigated. Both the numerical simulation and experimental results show that the MOMA has higher identification accuracy and robust noise immunity as well as producing an acceptable solution to ill-conditioning cases to some extent, but its CPU execution time is just less than one tenth of the TDM.
机译:提出了一种基于MOM的算法(MOMA),用于识别桥梁上随时间变化的移动车辆载荷。研究了一系列的实验室数值模拟和实验,并将提出的MOMA与现有的时域方法(TDM)进行了比较。研究了一些主要参数,例如基本函数项,执行CPU时间,数字滤波器的奈奎斯特分数,不适定系统方程的两种不同解决方案等。数值仿真和实验结果均表明,MOMA具有更高的识别精度和强大的抗噪能力,并且在某种程度上为病态情况提供了可接受的解决方案,但是它的CPU执行时间仅不到TDM的十分之一。

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  • 年度 2008
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  • 正文语种 {"code":"en","name":"English","id":9}
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