PolyMAX 模态参数识别算法的快速实现

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振动与冲击 ›› 2011, Vol. 30 ›› Issue (10) : 6-8,18.

论文

PolyMAX 模态参数识别算法的快速实现

孙鑫晖;郝木明; 王淮维

作者信息 +

Fast Implementation for PolyMAX Modal Identification Algorithm

SUN Xin-hui; HAO Mu-ming; WANG Huai-wei

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文章历史 +

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。

Abstract

PolyMAX is a broadband modal identification algorithm developed in recent years. It has many advantages in handling high noisy data, closely coupled modes and high damping structure. A fast implementation of PolyMAX is achieved by avoiding matrix inversion and multiplication in calculating reduced normal equations. A simulation case of seven DOF system and an application case of gas turbine disk are employed to validate the fast implementation. The results show that fast implementation can speed up modal identification significantly with little accuracy loss.

导出引用

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): 6-8,18

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): 6-8,18