| 随机振动功率谱复现迭代算法的研究 |
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| 引用本文： | 关广丰,丛大成,韩俊伟,李洪人.随机振动功率谱复现迭代算法的研究[J].地震工程与工程振动,2006,26(6):71-76. |
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| 作者姓名： | 关广丰 丛大成 韩俊伟 李洪人 |
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| 作者单位： | 哈尔滨工业大学,机电工程学院,黑龙江,哈尔滨,150001 |
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| 基金项目： | 教育部新世纪优秀人才支持计划项目（NCET-04-0325） |
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| 摘 要： | 采用功率谱复现迭代算法,依据系统的频率特性,对驱动信号进行迭代补偿,使得系统的响应谱能够高精度地复现期望谱。基于对影响随机振动功率谱复现精度因素的分析,提出在不同频段采用不同迭代步长的驱动谱迭代算法,给出了算法的程序框图,并通过试验验证了算法的有效性。
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| 关 键 词： | 随机振动 功率谱复现 迭代算法 |
| 文章编号： | 1000-1301（2006）06-0071-06 |
| 收稿时间： | 2006-08-16 |
| 修稿时间： | 2006-08-162006-09-22 |
Research on replicate iterative algorithm for power spectral density of random vibration |
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| Guan Guangfeng,Cong Dacheng,Han Junwei,Li Hongren.Research on replicate iterative algorithm for power spectral density of random vibration[J].Earthquake Engineering and Engineering Vibration,2006,26(6):71-76. |
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| Authors: | Guan Guangfeng Cong Dacheng Han Junwei Li Hongren |
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| Institution: | School of Mechanical Electronic Engineering, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | The replication iterative algorithm for power spectral density(PSD) is researched.Based on the frequency response function of the system the driven signal is compensated,so that the desired PSD is replicated at the output of the system.By analyzing the factors that influence the PSD replication precision of random vibration,the driven PSD iterative algorithm with different step lengths in different frequency bands and its block diagram are presented.The PSD replication experiment is performed on vibration table with the algorithm.The result proves the correctness of the algorithm. |
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| Keywords: | random vibration power spectral density replication iteration algorithm |
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