| 随机振动响应谱特性估计的数字模拟方法 |
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| 引用本文： | 缪炳祺. 随机振动响应谱特性估计的数字模拟方法[J]. 浙江工业大学学报, 1992, 0(3) |
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| 作者姓名： | 缪炳祺 |
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| 作者单位： | 浙江工学院机械工程系 |
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| 基金项目： | 浙江省自然科学基金资助项目 |
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| 摘 要： | 本文研究了采用数字模拟方法进行随机振动的响应谱估计问题,提出了具有高计算效率的模拟方法.文中表明,采用所给出的2SLS法可导出精确的ARMA模型,从而实现对随机激励的精确模拟.激励作用的ARMA模拟不仅提高了计算效率,且使ARMA谱分析中参数的确定问题呈线性关系,从而可方便地采用ARMA谱分析法,由短数据样本得到好的谱估计.
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| 关 键 词： | 数字模拟 ARMA模型 谱分析 |
Digital Simulation for the Estimation of Spectrum of Random Vibration |
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| Miao Bingqi. Digital Simulation for the Estimation of Spectrum of Random Vibration[J]. Journal of Zhejiang University of Technology, 1992, 0(3) |
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| Authors: | Miao Bingqi |
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| Affiliation: | Department of Mechanical Engineering |
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| Abstract: | The problem of spectrum estimation of random vibration response is studied in this paper with the aid of digital simutation. The procedure for improving the computational efficiency in the simulation is put forward. It is shown that accurate ARMA model can be derived with the improved 2SLS method presented in this paper, that leads to good ARMA simulation of the random exitation. The ARMA simulation of the exitation makes the problem of the parameter determination in the ARMA spectrum analysis become a linear one. Therefore, it is easy to use ARMA spectrum analysis to estimate the spectrum of the random response based on short data samples. |
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| Keywords: | Digital simulation ARMA model Spectrum analysis |
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