Non-stationary Analysis Applied to Tribocorrosion Signals
نویسندگان
چکیده
منابع مشابه
Analysis of non-stationary electric signals using the S-transform
Purpose – The purpose of this paper is to compare the accuracy of tracking the amplitude and frequency changes of non-stationary electric signals. Design/methodology/approach – Short-time fourier transform (STFT) and S-transform algorithms were applied to analyze non-stationary signals originating from switching of capacitor banks in a power system. Findings – The S-transform showed possibiliti...
متن کاملAnalysis of non-stationary signals in power systems
Received the M.Sc. and PhD degrees in electrical engineering from the Wroclaw University of Technology, Poland in 1997 and 2001 respectively. The NATO Organisation awarded Dr. Leonowicz an Advanced Fellowship in 2001 and he spent this fellowship at the Technical University of Dresden (Germany). He has been with the Department of Electrical Engineering at the Wroclaw University of Technology (Po...
متن کاملTime-frequency Analysis of Non-stationary Three Phase Signals
New method of observation and diagnosis of inverter-fed induction motor drives is developed and tested. Unsymmetrical conditions concerning the machine impedances or valves operation are reflected in the spectrum of the current spacephasor. We estimate the spectrum of the space-phasor with the help of the Wigner-Ville distribution (WVD) and we obtain its time-frequency representation with excel...
متن کاملTime-Frequency Domain Characterization of Stationary and Non stationary Signals
Abstract-This paper presents the various methods for the spectral analysis of signals for the stationary as well as non-stationary signals. Due to non-stationary characteristics of the signals, it has been always a challenge to achieve time frequency distribution of such signals. Between the various techniques of signal analysis, this paper uses Fourier transform, Short time Fourier transform, ...
متن کاملParametric Modeling of Non-Stationary Signals
Parametric modeling of non-stationary signals is addressed in this article. We present several models based on the characteristic features of the modelled signal, together with the methods for accurate estimation of model parameters. Non-stationary signals, viz. transient system response, speech phonemes, and electrocardiograph signal are fitted by these feature-based models.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Revista Virtual de Química
سال: 2015
ISSN: 1984-6835
DOI: 10.5935/1984-6835.20150093