通过位移复现控制实现地震加速度波模拟

英文篇名：Displacement waveform replication method for earthquake simulation
中文刊名：世界地震工程
英文刊名：World Earthquake Engineering
作者：严侠 ; 牛宝良 ; 宋琼
英文作者：YAN Xia ; NIU Baoliang ; SONG Qiong(Institute of System Engineering ; China Academy of Engineering Physics ; Mianyang 621900 ; China)
中文关键词：地震模拟 ; 波形复现 ; 地震模拟台 ; 位移控制
英文关键词：earthquake simulation ; waveform replication ; earthquake table ; displacement control
出版日期：2011-09-15
机构：中国工程物理研究院总体工程研究所;
年：2011
期：03
出版单位：世界地震工程

摘要

文中采用位移复现控制方法,实现了地震加速度波模拟。通过对误差谱加某一指数函数窗,加强高频修正力度,进一步改善了地震波在高频段的复现精度。通过某一低频地震模拟台的试验验证,引入的控制方法较好地解决了低频、低量级地震加速度波复现精度差的困难。试验结果表明,经过3次迭代后便能取得面积误差在2%以内的地震加速度波模拟效果。
This paper mainly analyses displacement waveform replication method for the earthquake simulation,and discusses an important technique in which the exponential frequency window is added to error spectrum for increasing modifyied intensity.On the low-frequency earthquake table,the test is proved that the waveform replication precision is improved on the high frequency domain.The control method is important to resolve the low-frequency and low-level earthquake acceleration replication precision problem.The test result shows that through three times iterations,the accuracy of the waveform replication is satisfied.

引文

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