Results 241 to 250 of about 29,705,142 (291)

Frequency-Response Analysis of Torsional Dynamics

IEEE Transactions on Power Systems, 2004
This paper introduces a frequency-domain approach for investigation of the phenomenon of torsional dynamics. The Nyquist criterion is adopted by the proposed method to identify stability regions with respect to torsional oscillations. This paper also introduces two performance indices to evaluate torsional dampings and propensity of the system to ...
A. Tabesh, R. Iravani
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Frequency response modeling for device analysis

IEEE 2002 28th Annual Conference of the Industrial Electronics Society. IECON 02, 2003
In many industrial activities, the assessment of the good condition of the devices involved in these activities is an important issue. The condition assessment is usually carried out taking some measurements of the device and postprocessing them somehow.
J. Pleite, E. Olias, A. Barrado, A. Lazaro, R. Vazquez   +4 more
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Frequency Response Analysis

2020
This chapter will introduce the concept of frequency response analysis. We will examine how analog circuits do not behave in the same manner for all frequencies. We will examine how performing Laplace Transform on time domain equations results in frequency domain equations that allow us to study the frequency dependent behaviour of analog circuits.
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Evaluation methods of frequency response analysis

2018 International Interdisciplinary PhD Workshop (IIPhDW), 2018
Reliable work of transformers in the power system affects the efficiency of power supplies to consumers. Each transformer should be subjected to periodic diagnostic tests in order to detect damage or prevent the development of defects, which may lead to excluding unit from operation.
Wojciech Szoka, Szymon Banaszak
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Design sensitivity analysis of structural frequency response

4th Symposium on Multidisciplinary Analysis and Optimization, 1992
This note provides an improved method to the modal superposition method for calculating frequency response sensitivities. It combines the mode- acceleration method with the Ritz minimization technique to improve the modal approximation accuracy. In addition, an iteration scheme is used to further enhance the result.
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Dynamic response analysis in the frequency domain

Earthquake Engineering & Structural Dynamics, 1993
AbstractAnalysis in the frequency domain using discrete Fourier transforms is an efficient means of calculating the dynamic response of linear systems. In fact, for systems with frequency dependent parameters and also in those cases where the complex frequency response functions are more easily determined, frequency domain analysis may be the only ...
J. L. Humar, Hong Xia
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Fourier Analysis and Response in the Frequency Domain

2004
This chapter presents the application of Fourier series to determine: (1) the response of a system to periodic forces, and (2) the response of a system to nonperiodic forces in the frequency domain as an alternate approach to the usual analysis in the time domain.
Mario Paz, William Leigh
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The analysis of low-frequency response experiments

Rheologica Acta, 1975
This work presents a review of the experimental technique and the theoretical frame work suitable for low-frequency response experiments on viscoelastic liquids.
J. Harris, R. Maheshwari
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Frequency Response Analysis of Power Transformers

2021
Research has indicated that with increasing penetration of non-renewable energy sources, more and more high-frequency (HF) transformers are needed at the distribution level. Various new topologies have been proposed for this, one of them being solid-state transformers. HF transformers have also been proposed to be useful in micro-grids.
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Analysis of frequency response across switching

2012
This chapter deals with systems with switching which occurs only once. For those systems, a method to analyze the gain from the sinusoidal input injected before switching to the output produced after switching is proposed. The obtained gain information will help us to design the frequency weighting functions used in synthesis of compensators to ...
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