Stator Faults Diagnosis and Protection in 3-Phase Induction Motor  Based on Wavelet Theory

Khalid Mahdi Abd Alhassan; Adel Ahmed Obed; Sadiq Irhayim Hassan

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Publication Date

Wed Nov 01 2017

Journal Name

Journal Of Engineering

Volume

23

Issue Number

11

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Stator Faults Diagnosis and Protection in 3-Phase Induction Motor Based on Wavelet Theory

: wavelet packet transform

induction motor protection

Shannon entropy

MSR

Khalid Mahdi Abd Alhassan

Adel Ahmed Obed

Sadiq Irhayim Hassan

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Publication Date

Wed Jun 30 2021

Journal Name

Journal Of Economics And Administrative Sciences

Comparison of Hurst exponent estimation methods

Fractional Brownian motion

Hurst exponent

Short memory

Long memory

Self-similarity

Discrete Wavelet

Long-range dependence

Short-range dependence

Amjad H.

Munaf Y.

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Through recent years many researchers have developed methods to estimate the self-similarity and long memory parameter that is best known as the Hurst parameter. In this paper, we set a comparison between nine different methods. Most of them use the deviations slope to find an estimate for the Hurst parameter like Rescaled range (R/S), Aggregate Variance (AV), and Absolute moments (AM), and some depend on filtration technique like Discrete Variations (DV), Variance versus level using wavelets (VVL) and Second-order discrete derivative using wavelets (SODDW) were the comparison set by a simulation study to find the most efficient method through MASE. The results of simulation experiments were shown that the performance of the meth

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(2)

Publication Date

Tue Mar 30 2021

Journal Name

Baghdad Science Journal

Approximate Analytical Solutions of Bright Optical Soliton for Nonlinear Schrödinger Equation of Power Law Nonlinearity

Adomian polynomials

multistep approach

Multistep Modified Reduced Differential Transform Method

nonlinear Schrodinger equations of power law nonlinearity

Che Haziqah Che

Amirah

Ahmad Izani Md

Adem

Ishak

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This paper introduces the Multistep Modified Reduced Differential Transform Method (MMRDTM). It is applied to approximate the solution for Nonlinear Schrodinger Equations (NLSEs) of power law nonlinearity. The proposed method has some advantages. An analytical approximation can be generated in a fast converging series by applying the proposed approach. On top of that, the number of computed terms is also significantly reduced. Compared to the RDTM, the nonlinear term in this method is replaced by related Adomian polynomials prior to the implementation of a multistep approach. As a consequence, only a smaller number of NLSE computed terms are required in the attained approximation. Moreover, the approximation also converges rapidly over a

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Publication Date

Thu Jun 30 2011

Journal Name

Al-khwarizmi Engineering Journal

Nahrain Mobile Learning System (NMLS)

Nahrain mobile learning system

short message service

wireless application protocols

multimedia messaging service

mobile learning

personal digital assistant

wireless fidelity

general packet radio service

extensible hypertext markup language

java database connectivity

Mahmood Sami

Mumtaz

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The work in this paper involves the planning, design and implementation of a mobile learning system called Nahrain Mobile Learning System (NMLS). This system provides complete teaching resources, which can be accessed by the students, instructors and administrators through the mobile phones. It presents a viable alternative to Electronic learning. It focuses on the mobility and flexibility of the learning practice, and emphasizes the interaction between the learner and learning content. System users are categorized into three categories: administrators, instructors and students. Different learning activities can be carried out throughout the system, offering necessary communication tools to allow the users to communicate with each other

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Publication Date

Sat Oct 31 2020

Journal Name

International Journal Of Intelligent Engineering And Systems

Speech Emotion Recognition Using MELBP Variants of Spectrogram Image

Speech emotion

Spectrogram image

Multi-block extended local binary pattern (MELBP)

Deep beliefnetwork (DBN)

Short term fourier transform (STFT)

Suhaila N.

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