Nonlinear Acoustic Oscillation Analysis Method Based on Improved Variational Mode Decomposition

Bingning Jin, Lin Gan, Yanjun Bai, Xiangyu Zhang, Shaojuan Wei, Zhuopu Wang, Peijin Liu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The problem of nonlinear combustion instability seriously affected the solid rocket motors and has been widely concerned by researchers. Experimental studies have shown that there is a clear multi-order modes coexistence phenomenon in nonlinear combustion unstable pressure oscillation, and there is energy transfer between modes. Therefore, in order to study the evolution of energy transfer between modes in nonlinear combustion instability, modes extraction of characteristic signal data is required. In this paper, based on VMD decomposition method, considering that artificially set parameters required by VMD decomposition have great influence on the results, a mode decomposition method SPSO-VMD is proposed for nonlinear unstable characteristic signals of SRM, and the typical nonlinear unstable signal is extracted and analyzed. The results show that the proposed method can accurately obtain the frequencies and amplitudes of various modes in nonlinear oscillating signals.

Original languageEnglish
Title of host publication2022 13th International Conference on Mechanical and Aerospace Engineering, ICMAE 2022
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages408-413
Number of pages6
ISBN (Electronic)9781665472357
DOIs
StatePublished - 2022
Event13th International Conference on Mechanical and Aerospace Engineering, ICMAE 2022 - Bratislava, Slovakia
Duration: 20 Jul 202222 Jul 2022

Publication series

Name2022 13th International Conference on Mechanical and Aerospace Engineering, ICMAE 2022

Conference

Conference13th International Conference on Mechanical and Aerospace Engineering, ICMAE 2022
Country/TerritorySlovakia
CityBratislava
Period20/07/2222/07/22

Keywords

  • acoustic modes
  • acoustic oscillation signal
  • amplitude
  • frequency
  • nonlinear combustion instability
  • SPSO-VMD

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