The Operational Modal Analysis of an Industrial Sewing Machine

Abstract:

The operational modal analysis (OMA) was conducted on a certain industrial sewing machine to identify its modal parameters. Harmonic analysis was carried out through the OP.Synthesis method and false modes were removed according to the Modal Assurance Criterion, finally the natural frequency, damping ratio and modal shape were obtained. The vibration in the low frequencies is mainly nodding and shaking, while that in the high frequencies is local expansion of the head and motor end. The result shows that, the modal parameters of the industrial sewing machine can be well identified by the OMA method. This paper provides a valuable reference for the vibration source identification and structural vibration reduction.

• Periodical: Applied Mechanics and Materials (Volume 302)
• Pages: 541-545
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.302.541
• Online since: February 2013
• Authors: Li Zhang, Ya Jun Li, Yan Miao Ma
• Keywords: Industrial Sewing Machine, Operational Modal, Parameter Identification

References

[1] Ma Weijin, Xiong Shibo. Vibration Testing and Operational Modal Analysis of Automated Warehouse Lane Stacker[J]. Chinese Journal of Mechanical Engineering , 2004, 15(4): 287-289.

[2] Cheng Hang, Zhao Yuan. Application of Operational Modal Analysis to the Reducer Monitoring and Diagnosis[J]. Journal of Vibration Measurement & Diagnosis, 2010, (2): 30: 198-200.

[3] Gong Lingzhu, Yang Xiaoxiang, etc. Operational modal analysis of harbor crane under ambient excitation[J]. Journal of Mechanica & Electrical Engineering, 2011, 28(4): 422 -424.

[4] Chen Lin, Zang Limin, Duan Hepeng. Moda Testing and Analysis of the Vehicle System Based on Ambient Excitation[J] Noise and Vibration Control. 2008 (6): 82-84.

[5] Zhang Yimin, Zhang Shouyuan, LI He, etc. Modes in Operationa Modal Analysis[J]. Journal of Vibration and Shock, 2009, 28(1): 64-66.