Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 51 for “"Time-domain analysis"”.
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Steady-State Time-Domain Analysis of LLCL Resonant Converter
… the LLC resonant tank on the input side. For the analysis of a series resonant converter, frequency domain modelling (FDM) is usually sufficient due to the limited modes of operation. However, for a three or more element resonant tank, multiple modes of operation arises due to which FDM is …
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Numerical methods in the time-domain analysis of systems
Thesis (M.S.)--Michigan State University of Agriculture and Applied Science. Dept. of Electrical Engineering, 1960
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Finite-difference time-domain analysis of horn antenna scattering
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science; and, (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 1998.
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Finite difference time domain analysis of microstrip antenna-circuit modules
… radiation patterns were calculated for the first time. All of our results were in agreement with experimental findings.
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Finite difference-time domain analysis of electromagnetic interference and radiation problems
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1995.
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Frequency and time domain analysis of carbon nanotubes with realistic shape and distribution
… response to incident electromagnetic radiation. Time-domain electromagnetic codes facilitate the analysis of scatterers with non-linear loads. Therefore, we used the Time Domain Integral Equation (TDIE) formulation and Method of Moments (MoM) to calculate the electromagnetic scattering …
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Novel applications of pulse pre-pump Brillouin Optical Time Domain Analysis for behavior evaluation of structures under thermal and mechanical loading
… to fire. The pulse pre-pump Brillouin Optical Time Domain Analysis (PPP-BOTDA) was employed to measure strain and temperature distributions along a fused silica single-mode optical fiber. Strain distributions in concrete were measured from the distributed fiber optic sensors embedded in bonded …
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Simulation studies of slow dynamics of hydration water in lysozyme : hydration level dependence and comparison with experiment using new time domain analysis
… well. Besides the simulation works, a new time domain Relaxing-Cage Model (RCM) fitting methodology is introduced in the experiment part. We use the Gaussian functions to convert the Intermediate Scattering Functions (ISF) from Quasi-Elastic Neutron Scattering (QENS) experiments from …
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A Time-Domain Modeling of Multi-Element Resonant Converter With Capacitive Output Filter
… user interface (GUI) features to this tool. The time-domain analysis of CLL resonant converter has been introduced in the literature. An alternative time-domain analysis of LLC resonant converter has been proposed.This generalized analysis is used to model LLC resonant, CLL resonant and LC series …
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A nonlinear wave load model for extreme and fatigue responses of offshore floating wind turbines
… acting on a floating body is obtained by the time rate of change of the impulse of the velocity potential flow around the body. This new model called Fluid Impulse Theory is used to address the nonlinear hydrodynamic wave loads and the resulting nonlinear responses of floating wind turbine for …
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Wave loads on offshore wind turbines
… acting on a floating body is obtained by the time rate of change of the impulse of the velocity potential flow around the body. This new model called Fluid Impulse Theory is used to address the nonlinear hydrodynamic wave loads and the resulting nonlinear responses of floating wind turbine for …
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Investigation of explicit finite-element time-domain methods and modeling of dispersive media and 3D high-speed circuits
In this dissertation, efficient time-domain domain decomposition algorithms are investigated, compared, and further enhanced, and a new domain decomposition method is proposed based on the knowledge of existing ones. First, several explicit domain decomposition methods, including the dual-field …
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Gradient characterization in magnetic resonance imaging
… is used to model the gradient system as a linear time-invariant transfer function through frequency-domain analysis and time-domain analysis. A transfer function model of the gradient system on the 3T Siemens Tim Trio scanner is presented here along with the characterization and analysis of common …
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QT-interval adaptation to changes in autonomic balance
… on the heart, is primarily studied via frequency-domain and time-domain analysis of heart rate variability (HRV). HRV studies the variability of the RR intervals in the ECG; these intervals are modulated by the autonomic influence on the periodicity of the the heart's pacemaker, the sino-atrial …
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Maximum likelihood time-domain beamforming using simulated annealing
… is used to estimate the source bearings and time series. Simulated annealing is used to implement the resulting time-domain beamformer. Broadband signals in spatially correlated noise are treated. Previous time-domain beamformers did not consider the correlation between random noise, and they …
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Simulation and Analysis of Behavioral Analog Systems
… like SPICE due to the wide separation in time constants characterizing them. Examples of such systems include power electronic circuits, phase-locked loops and RF circuits such as narrow-band amplifiers and mixers. The current trend towards integrating analog and digital components on a …
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Implementation of vibration-based structural health monitoring technique for identification of simulated corrosion damage in steel pipeline using neural network
… destructive testing which highly cost and time consumptions. Moreover, the techniques were lacking in correlating corrosion behaviour and its damage severity. This research proposed several signal corrosion features extracted from time domain analysis which provide substantial information …
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Integral twist actuation of helicolpter rotor blades for vibration reduction
… during different flight conditions: frequency domain analysis for hover, and time domain analysis for forward flight. Both stem from the same three-dimensional electroelastic beam formulation with geometrical-exactness, and are coupled with a finite-state dynamic inflow aerodynamics model. A …
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STRAIN AND TEMPERATURE MEASUREMENT FROM DISTRIBUTED FIBER OPTIC SENSORS IN PERFORMANCE-BASED FIRE ENGINEERING
… cables based on pulse-pre-pump Brillouin optical time domain analysis. Finally, distributed fiber optic measurements of strain and temperature in long-span composite floor beams with simple shear connections are performed under compartment fires"--Abstract, p. iv</p>
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