Work

Orthogonalized variational mode decomposition

Year: 2025

Type: article

Abstract: This paper introduces a modification to variational mode decomposition (VMD) by promoting mode orthogonality in the minimization problem. The main idea is to actively transmit and receive non-orthogonal signal components between the modes by imposing weak orthogonality conditions. The approach, combined with the proportional value of filter bandwidth, effectively prevents mode duplication and enhances robustness of the decomposition against over-segmentation. Experiments considering a broadband synthetic signal show the improved performance of this method in comparison to the standard Variational Mode Decomposition (VMD). The sensitivity of the method to different filter bandwidth, levels of noise, and its effectiveness in handling over-segmentation are also examined.

Source: Signal Processing

DOI: 10.1016/j.sigpro.2025.110251

Authors: Himpu Marbona, Daniel Rodríguez, Alejandro Martínez-Cava, Eusebio Valero

Institution: Universidad Politécnica de Madrid

Language: English

Topic: Machine Fault Diagnosis Techniques

Subfield: Control and Systems Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,190