Investigation of Degradative Signals on Outdoor Solid Insulators Using Continuous Wavelet Transform

نویسندگان

چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Investigation of Signal Characteristics Using the Continuous Wavelet Transform

he continuous wavelet transform (CWT) displays the scale-dependent structure of a signal as it varies in time. This scale-dependent structure, in turn, is essentially the instantaneous frequency, so that the CWT provides a view of the frequency versus time behavior of the signal and therefore has great potential as a preliminary tool for investigating wideband, nonstationary, or other types of ...

متن کامل

R-peak Detection in Electrocardiogram Signals Using Continuous Wavelet Transform

In this paper, an efficient wavelet-based method is proposed to detect the R-peak from QRS complex. At first, a preprocessing step is taken to remove high frequency noise of electrocardiogram (ECG) data. Then, continuous wavelet transform (CWT) is applied to the signal and the R-peaks of QRS complexes are detected with acceptable accuracy using special thresholding method. The detection perform...

متن کامل

gravity sources identification using continuous wavelet transform

introduction: wavelet transform is one of the useful and suitable tools for time series and signal analysis. nowadays wavelet transform is frequently used in geophysical data processing and interpretation, especially seismic data. however, the use of this method isn’t widespread in gravity and geomagnetic. fedi and quarta (1998), martelet et al. (2001) and de oliveira lyrio (2004) used the wave...

متن کامل

Detection of embolic signals using wavelet transform

Early and accurate detection of microemboli is important for monitoring of preventive therapy in stroke-prone patients. Embolic signals have large amplitude and show transient characteristics because of their reflectivity and size compared to the blood cells. One of the problems in detection of microemboli is the identification of an embolic signal caused by very small microemboli. The amplitud...

متن کامل

Using PCA with LVQ, RBF, MLP, SOM and Continuous Wavelet Transform for Fault Diagnosis of Gearboxes

A new method based on principal component analysis (PCA) and artificial neural networks (ANN) is proposed for fault diagnosis of gearboxes. Firstly the six different base wavelets are considered, in which three are from real valued and other three from complex valued. Two wavelet selection criteria Maximum Energy to Shannon Entropy ratio and Maximum Relative Wavelet Energy are used and compared...

متن کامل

ذخیره 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: Journal of Electrical Engineering and Technology

سال: 2016

ISSN: 1975-0102

DOI: 10.5370/jeet.2016.11.3.683