Research on tacholess fast-varying instantaneous rotating frequency estimation model based on nonlinear short-time Fourier transform combination with adaptive chirp mode decomposition and its application

• Published in: Journal of low frequency noise, vibration, and active control Vol. 44; no. 3; pp. 1311 - 1322
• Main Authors: Yan, Lu, Lan, Tian Zhong, Yang, Shi Li, Chen, Qin Xiao, Bie, Jin Wei
• Format: Journal Article
• Language: English
• Published: London, England SAGE Publications 01.09.2025; Sage Publications Ltd; SAGE Publishing
• Subjects: Chirp; Decomposition; Energy distribution; Fault diagnosis; Fourier transforms; Frequency distribution; Roller bearings; Rotation; Time-frequency analysis; Vibration; instantaneous rotating frequency estimation; Nonlinear short-time Fourier transform; fault diagnosis; order component extraction; adaptive chirp mode decomposition; high-speed fluctuation

Instantaneous rotating frequency extraction is one of the key technologies for mechanical health monitoring and fault diagnosis. As the instantaneous rotating frequency presents fast-varying property under high-speed fluctuation, this paper uses a coarse-to-fine strategy to propose a tacholess fast-...