As a precision mechanical component to reduce friction between components, the rolling
bearing is widely used in many fields because of its slight friction loss, strong bearing …

In the modern manufacturing industry, mechanical equipment plays a crucial role.
Equipment working in harsh environments for a long time is more likely to break down …

For a rotary machine vibration signal collected under variable speed conditions, its time–
frequency representation (TFR) contains abundant oscillatory components with time-varying …

In this work, genetic algorithm (GA), kernel based mutual information (KEMI) fitness function
and variational mode decomposition (VMD) based strategy is proposed for the purpose of …

Performances and working life of angular contact ball bearings (ACBB) are determined by
their internal load distribution and stiffness. To obtain accurate calculation results of the load …

The main purpose of this paper is to represent a methodenabling vibration components to
be extracted from a high-resolution Short-Time Fourier-Transformation (STFT) based …

A ridge in a time-frequency graph (TFG) describes the relationship of a signal component's
instantaneous frequencies over time. Accurate ridge extraction from TFGs is beneficial for …

In the field of prognostic and health management of engineered systems, health indicator
construction of bearings is one of the most significant and challenging problems. Many data …

Bearings are key components of rotating machines, and their condition monitoring and fault
diagnosis have received much attention from academia and industry in recent years …

Instantaneous angular frequency (IAF) is an inherent characteristic associated with
mechanical dynamics and contains adequate diagnostic information about rotating …