Signal processing methods are essential in scientific research, and time-frequency analysis
techniques such as Fourier Transform constitute an important progress in data analysis, but …

Signal processing techniques play an important role in seismic data analysis. Variational
mode decomposition (VMD), as a powerful signal processing method, has been extensively …

The world has witnessed the adverse impact of the COVID‐19 pandemic. Accordingly, it is
expected that information transmission between equities and digital assets has been altered …

Fault diagnosis is an important means to ensure the safe and reliable operation of
mechanical equipment. In machinery fault diagnosis, collecting and mining the potential fault …

Among the most widespread systems in industrial plants are automated drive systems, the
key and most common element of which is the induction motor. In view of challenging …

Because the hydraulic directional valve usually works in a bad working environment and is
disturbed by multi-factor noise, the traditional single sensor monitoring technology is difficult …

The bearing vibration signal shows strong non-stationary property under time-varying speed
conditions. In addition, the weak bearing fault characteristic is often submerged in strong …

In view of the fact that vibration signals of rolling bearings are much contaminated by noise
in the early failure period, this paper presents a new denoising SVD-VMD method by …

The direct-shift gearbox is widely used in many applications, such as automotive and
aerospace, due to its large transmission ratio and high transmission efficiency. Rough and …

The joint time‐frequency analysis method represents a signal in both time and frequency.
Thus, it provides more information compared to other one‐dimensional methods. Several …