| 利用ARMAX模型识别结构模态参数 |
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| 引用本文： | 赵永辉,邹经湘. 利用ARMAX模型识别结构模态参数[J]. 振动与冲击, 2000, 19(1): 35-36 |
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| 作者姓名： | 赵永辉 邹经湘 |
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| 作者单位： | 哈尔滨工业大学航天工程与力学系 |
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| 摘 要： | 由振动系统的运动方程建立了描述系统输入、输出和噪声特性的外源自回归滑动平均 (ARMAX)模型。采用近似极大似然法估计ARMAX模型系数 ,克服了传统极大似然估计方法的高度计算复杂性 ,需要对参数的初值进行猜测的缺点。仿真结果表明本文方法鲁棒性较好。
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| 关 键 词： | ARMAX模型 近似极大似然法 模态参数识别 |
IDENTIFICATION OF MODAL PARAMETERS FOR STRUCTURE USING ARMAX MODEL |
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| Zhao Yonghui,Zou Jingxiang. IDENTIFICATION OF MODAL PARAMETERS FOR STRUCTURE USING ARMAX MODEL[J]. Journal of Vibration and Shock, 2000, 19(1): 35-36 |
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| Authors: | Zhao Yonghui Zou Jingxiang |
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| Abstract: | Based on the motion equation of vibrating system,ARMAX model is established,which describes input,output and noise characteristics of the system.An approximate maximum likelihood method is adopted for estimating ARMAX model parameters.The method overcomes some drawbacks such as high computational complexity and need of initial guess of parameter values for traditional maximum likelihood method.Simulation results show that the proposed method exhibits robust properties. |
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| Keywords: | ARMAX model approximate maximum likelihood method identification of modal parameters |
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