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Year: 2018, Volume: 18, Number: 4
... the fault detection by only analyzing the electrical machine ESA is based on the analysis of the electrical signals quantities. This paper proposes a study of ESA for PMSM frequency spectra, obtained by using Fast Fourier Transform condition monitoring. The review of some fault patterns is presented as well as the development of a scale model ( ...
Year: 2012, Volume: 12, Number: 2
... Advances in Electrical and Computer Engineering Volume 12, Number 2, 2012 The Effects of the Acute Hypoxia to the Fundamental Frequency of the Speech Signal Zoran N. MILIVOJEVIĆ1, Marina MILIVOJEVIĆ 2, Darko BRODIĆ 3 1 Techical College Niš, Aleksandra Medvedeva 20, 18000 Niš, Serbia 2 University of Niš, Medical Faculty ...
Year: 2016, Volume: 16, Number: 3
... into different kinds hybrid, and rotative-LS (R-LS) have been studied through [16-17]: both simulation and implementation of an experimental setup. By extracting the frequency spectrum and calculation of THD ï‚· Phase Disposition (PD-PWM). and WTHD indices, a quantitative comparative study of ï‚· Phase Opposition Disposition (POD-PWM) various ...
Year: 2018, Volume: 18, Number: 3
... all the test conditions acceptable limits that can be reached in the estimation of specified in the IEEE Standard C37.118.1. Besides that, real amplitude, phase angle, frequency, and ROCOF are defined voltage and current signals of an electrical system are in the standard. It also indicates the allowable reporting analyzed. The obtained results ...
Year: 2016, Volume: 16, Number: 1
... be suitable for real time provides an extra degree of freedom for a certain roll-off factor, applications. α. The proposed pulse is examined and compared with other Frequency offset errors caused due to Doppler's effect, existing pulses in terms of out-of-band (OOB) power, intercarrier interference (ICI) power, signal-to-interference frequency mismatch ...
176. Basic Consideration for Signal Processing Solutions Used in Sigma-delta Based ADC and DAC Converters
Year: 2010, Volume: 10, Issue: 1
... Chip came up). This paper presents R ADC exactly such an example in which the audio section of a mobile T phone must coexist with the intermediate radio frequency DAC section in a single IC. It starts by mentioning the technical challenges facing this request, followed by an introduction of the fundamental theories used in finding ...
Year: 2015, Volume: 15, Number: 3
... When connected to an excitation source, there will be an energy transfer from the coil to the wire. The maximum energy transfer will occur at the vibrating wire's frequency of resonance. Using the transient regime analysis, it has been proven that, in the response time interval – when the wire vibrates freely, the current ...
Year: 2019, Volume: 19, Number: 2
... resolution lead to a reduction of a 30% of life expectancy of a method is unknown, where the classic algorithms are capacitor [7]. Because sampling frequency necessary for ineffective, or where it is very expensive to apply due to its obtaining a valid signal for the power quality analysis is by the range of ...
Year: 2020, Volume: 20, Number: 4
... an induction motor with rotor motors, and its analytical research was performed showing bar breakage, and electromagnetic field analysis based on finite the trend of left side band frequency in a double bar element method and motor current signal analysis is breakage as a function of the relative position of the bars performed according to various load conditions ...
Year: 2019, Volume: 19, Number: 3
... become parameterization was performed with the use of the spectral subband centroid energy vectors (SSCEV) algorithm, which consistent when performed with the use of intelligent compresses the frequency spectrum and presents the results of systems capable of recognizing data patterns and classifying the AE energies in several frequency bands. Thus, it was them adequately [ ...
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