| 基于系统响应自相关函数的振动参数识别 |
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| 引用本文： | 张振中,朱石坚. 基于系统响应自相关函数的振动参数识别[J]. 振动与冲击, 2005, 24(5): 63-66 |
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| 作者姓名： | 张振中 朱石坚 |
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| 作者单位： | 海军工程大学舰船设备振动与噪声研究所,武汉,430033 |
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| 摘 要： | 分析了线性系统全响应的组成,利用Prony多项式,提出了用于振动模态参数识别的自相关复指数法。数值仿真结果证明该方法有效。数值仿真还对初始激励、采样精度、采样频率等影响方法效果的参数的选择进行了讨论。
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| 关 键 词： | Prony多项式 自相关函数 参数识别 |
| 收稿时间： | 2004-04-12 |
| 修稿时间： | 2004-06-10 |
PARAMETER IDENTIFICATION BASED ON ACF OF THE OUTPUT |
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| Zhang Zhenzhong,Zhu Shijian. PARAMETER IDENTIFICATION BASED ON ACF OF THE OUTPUT[J]. Journal of Vibration and Shock, 2005, 24(5): 63-66 |
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| Authors: | Zhang Zhenzhong Zhu Shijian |
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| Abstract: | The composition of total output of a linear vibration system is analyzed. A complex exponential method based on ACF autocorrelation function of the total output is developed to identify the modal parameters by using Prony polynomial. The validity is confirmed by numerical simulation results. The principles for selection of several parameters such as the initial excitation the measurement precision the sampling frequency etc are studied to meliorate the efficiency of the method in numerical simulations. |
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| Keywords: | prony polynomial ACF parameter identification |
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