| PolyMAX 模态参数识别算法的快速实现 |
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| 引用本文： | 孙鑫晖,郝木明,王淮维. PolyMAX 模态参数识别算法的快速实现[J]. 振动与冲击, 2011, 30(10): 6. DOI: |
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| 作者姓名： | 孙鑫晖 郝木明 王淮维 |
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| 作者单位： | 中国石油大学（华东）机电工程学院，山东东营 257061 |
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| 摘 要： | PolyMAX 是近几年发展起来的宽频带模态参数识别算法，该方法在抗干扰能力、识别密集模态、以及处理大阻尼复杂结构方面具有非常好的特性。通过避免缩减正则方程计算中的矩阵求逆以及乘法运算，实现了该算法的快速实现。最后采用七自由度仿真算例与航空发动机涡轮盘实测算例进行验证。结果表明：快速实现能够在对识别精度影响很小的情况下显著提高参数识别速度。
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| 关 键 词： | 模态参数识别 PolyMAX 算法 缩减正则方程 快速实现 稳定图 |
Fast implementation for PolyMAX modal identification algorithm |
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| SUN Xin-hui,HAO Mu-ming,WANG Huai-wei. Fast implementation for PolyMAX modal identification algorithm[J]. Journal of Vibration and Shock, 2011, 30(10): 6. DOI: |
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| Authors: | SUN Xin-hui HAO Mu-ming WANG Huai-wei |
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| Affiliation: | Institute of Mechanical and Electrical Engineering, China University of Petroleum, Dongying 257061, China |
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| Abstract: | PolyMAX is a broadband modal identification algorithm developed in recent years.It has many advantages in handling highly noisy data,closely coupled modes and high damping structures.A fast implementation of PolyMAX was achieved by avoiding matrix inversion and multiplication in calculating reduced normal equations.A simulation case of a seven-DOF system and an application case of a gas turbine disk were used to validate the fast implementation.The results showed that fast implementation can speed up modal ... |
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| Keywords: | modal parameters identification PolyMAX algorithm reduced normal equation fast implementation stabilization diagram |
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