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 12 of 12 for “"Frequency Domain Model"”.
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Frequency domain model-based intracranial pressure estimation
… availability of this vital sign. We present a frequency-domain approach to ICP estimation using a simple lumped, linear time-invariant model of cerebrovascular dynamics. Preliminary results from 28 records of patients with severe traumatic brain injury are presented and discussed. Suggestions …
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Flexible dynamics of floating wind turbines
… work presents Tower Flex, a structural dynamics model for a coupled analysis of offshore floating wind turbines consisting of a tower, a floating platform and a mooring system. In this multi-body, linear frequency-domain model, the tower is represented as a series of uniform Timoshenko beams …
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Integrated EMI Filters for Switch Mode Power Supplies
… to the parasitics of discrete components, high-frequency attenuation of the filter is reduced and the effective filter frequency range is limited. As a result, discrete EMI filters are usually bulky, high profile, and have poor high-frequency performance. With an aim to solving these issues, …
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The application of advanced hydrodynamic analyses in ship design
… wave-induced motions and loads in the time domain. Seakeeping analysis has traditionally been incorporated late in the design process, using parametrics and two-dimensional linear strip theory methods in the frequency domain. Model testing, due to its relative expense, is incorporated even …
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Modelling the human cochlea
… doctoral thesis, a classical, lumped-element model is used to study the cochlea and to simulate click-evoked and spontaneous OAEs. The original parameter values describing the microscopic structures of the cochlea are re-tuned to match several key features of the cochlear response in humans. …
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Hydrodynamic Design Optimization and Wave Tank Testing of Self-Reacting Two-Body Wave Energy Converter
… neutrally buoyant submerged body. Using a linear frequency-domain model, analytical solutions of the optimal power and the corresponding power-takeoff components are derived for the two-body wave energy converter. Using these solutions, a case study is conducted to investigate the influence of the …
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Compressive sensing based non-destructive testing using ultrasonic arrays.
… the traditional methods. In this study, using a frequency-domain model for the signals received by an ultrasonic array, we propose three approaches to convert the model to the format used by compressive sensing theory. Each proposed approach is tested on the experimental data and their …
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Experimental and Numerical Modelling of a Multiple Oscillating Water Column Structure
… is concerned with the physical and numerical modelling of an offshore floating platform, as proposed by a commercial developer. It is envisaged that the platform will capture both wave and wind energy, using an array of oscillating water columns (OWC) and conventional wind energy technology. …
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Dynamics of a vertically tethered marine platform
… any component of motion of the ship. The natural frequency of the system is found to be within the frequency band of ship motion for most of its operating range and the platform response is weakly non-linear. This results in a vertical acceleration of the platform that is up to 2.2 times larger …
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EMI Terminal Behavioral Modeling of SiC-based Power Converters
… more commercially available, higher switching frequency is being applied to achieve higher efficiency and power density in power converters. However, electro-magnetic interference (EMI) becomes a more severe problem as a result. In this thesis, the switching frequency effect on conducted EMI …
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Modeling and Stability Analysis for Multiphase Constant On-Time Control With Phase Overlapping
… currently, there is no good small-signal model to analyze stability and design high-bandwidth control loops for multiphase COT buck converters operating under phase-overlapping conditions. To address this issue, this dissertation presents a systematic small-signal modeling approach for …
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Pyroshock Testing: A Theoretical and Experimental Investigation for the Qualification of Aerospace Equipment
L'abstract è presente nell'allegato / the abstract is in the attachment