Fast Implementation for PolyMAX Modal Identification Algorithm

PDF(1392 KB)

Journal of Vibration and Shock ›› 2011, Vol. 30 ›› Issue (10) : 6-8,18.

论文

Fast Implementation for PolyMAX Modal Identification Algorithm

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

Author information +

History +

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.

Key words

modal parameters identification / PolyMAX algorithm / reduced normal equation / fast implementation / stabilization diagram

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

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