| 线性振动系统加权递推最小二乘法时域参数识别 |
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| 引用本文： | 陈树越,潘宏侠.线性振动系统加权递推最小二乘法时域参数识别[J].振动与冲击,1995,14(4):52-56. |
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| 作者姓名： | 陈树越 潘宏侠 |
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| 作者单位： | 华北工学院 |
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| 摘 要： | 本文给出了加权最小二乘法的递推形式，并利用该方法根据自由响应的信噪比随时间逐渐降低的性质加不同的权项。在时域识别了粘性阻尼线性振动系统的复频率，并与递推最小二乘法进行了对比。通过计算机仿真和实际应用表明本文提出的方法是可靠和有效的。
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| 关 键 词： | 振动，参数识别，最小二乘法 |
THE PARAMETER IDENTIFICATION OF THE LINEAR VIBRATION SYSTEM IN TIME DOMAIN BY THE WEIGHTED RECURSIVE LEAST SQUARE METHOD |
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| Chen Shuyue,Pan Hongxia.THE PARAMETER IDENTIFICATION OF THE LINEAR VIBRATION SYSTEM IN TIME DOMAIN BY THE WEIGHTED RECURSIVE LEAST SQUARE METHOD[J].Journal of Vibration and Shock,1995,14(4):52-56. |
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| Authors: | Chen Shuyue Pan Hongxia |
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| Affiliation: | North China Institute of Technology |
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| Abstract: | The recursive form of the weighted least square method is offered in this paper.According to that the signal-to-noise ratio decreases gradually with time in the response of freevibration,different weighted values at different instants are adopted to identify the complex frequencies of t e viscous -damped linear vibration system in time domain.The results are compared with that of the common recursive least square method.The method presented in the paper is proved to be reliable and effective by computer simulation. |
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| Keywords: | vibration identification of parameters least square method |
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