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 20 for “"power measurement"”.
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Sound power measurement in a semi-confined space,
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1971.
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Fast, accurate power measurement and optimization for microprocessor platforms
Power and energy consumption have become important for all computers, but the tools used to measure and optimize power on physical hardware lag far behind performance focused tools. Existing measurement apparata have low analog bandwidth, do not explicitly correlate power data with processor …
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Load-based energy savings in three-phase squirrel cage induction motors
… load determination methods such as input power measurement involve working around high voltages hence have safety issues. These methods are time consuming and expensive. The purpose of this research was to develop a method of sizing electric motors which is simple to use, economical, safe …
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Prediction of the power losses of PWM inverter drives for permanent magnet synchronous motors
A model is developed for predicting power losses for a hard-switching threephase IGBT inverter drive for synchronous motor applications. For a given set of motor parameters, semiconductor device parameters and motor operating conditions, the various losses and the temperature rises of semiconductor …
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Power analysis and message decoding of laser engagement systems
… verification of correct transmitter operation. Power measurements can be calculated from the sampled waveforms, but require proper sampling rates to ensure accurate power calculations. Calculating power accurately is important when verifying transmitter power, which is often measured to ensure …
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Optimal standoff imaging using structured laser illumination and graphical models
… on the scene of interest, and a single-detector power measurement is made on the light each pulse returns from the scene. There has been significant interest in the "ghost imaging" configuration, in which the spatial patterns are randomly generated-e.g., by driving the pixels of a spatial light …
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ISM S-band CubeSat Radio Designed for the PolySat System Board
… attitude control system. Noise floor measurements of a CubeSat ground station demonstrate that terrestrial ISM interference can be minimized to below the thermal noise floor by carefully choosing the operating frequency.</p> <p>The radio is specifically designed as a daughter board for …
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An energy efficient AES engine with DPA-resistance
… about the operations they process. Differential Power Analysis (DPA) is one of the most powerful attacks to disclose secret key of the engine. This thesis proposes an energy efficient AES-128 engine which is resilient to DPA attacks. A proposed design adopts extensive parallelism and voltage …
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Theory, design and implementation of a digital receiver for the Advanced Communications Technology Satellite (ACTS) beacons
… The terminals will measure the received signal power from the ACTS satellite beacons (20 GHz, 27.5 GHz) in various climates at different elevation angles. The resulting signal power measurement, radiometer and weather measurement data will be used to characterize atmospheric effects on signal …
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Measuring and tuning energy efficiency on large scale high performance computing platforms
Recognition of the importance of power in the field of High Performance Computing, whether it be as an obstacle, expense or design consideration, has never been greater and more pervasive. Research has been conducted in a number of areas related to power. Little, if any, existing research has …
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Energy Measurements of High Performance Computing Systems: From Instrumentation to Analysis
… energy consumption. To fully leverage energy measurements, their quality needs to be well-understood. To that end, this thesis provides a rigorous evaluation of various energy measurement techniques. I demonstrate how the deliberate selection of instrumentation points, sensors, and analog …
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Software Power Analysis And Optimization For Power-Aware Multicore Systems
… all the factors in sustainable computing, power dissipation and energy consumption, arguably speaking, are fundamental aspects of modern computer systems. Different from performance metric, power dissipation is not easy to measure because hardware instrumentation is usually required. Yet as …
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The uncertainty in standardised sound power measurements: complying with ISO 17025
… of the most important aspect to deal with is the measurement result. Whenever decisions are based on measurement results, it is important to have some indication of the quality of the results. In every area concerning with noise measurement many standards are available but without an expression of …
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Enhancing side-channel analysis through measurement, and high-power IEMI generation
… work proposes an effective methodology to launch power SCA and increase the efficiency of the attack by improving the measurements. The research examines heuristics related to measurement parameters, investigate ways to optimize the parameters, determine their effects empirically, and provide a …
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Measurement and Analysis of the Standby Power of Twenty-Seven Portable Electric Spas
… to regulate the maximum allowable standby power for a portable electric spa based on the spa volume. The goal of this regulation is to require improvements to the lowest performing models, for which simple and cost effective improvements are readily available, without eliminating average or …
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An air-to-air heat pump
… the pining circuits. A two-wattmeter method of power measurement was installed on the unit. This method enables the operators to determine the power supplied to each motor and instantaneous power when the load on the unit is changing. Each of the motors is protected by fusible disconnect boxes. …
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MLPerf PowerPack: Defining MLPerf Inference Benchmark's Power Profile
… thesis, we present our findings from measuring power consumption for individual system components, including the CPU, GPU, and disk drive, using the PowerPack framework and on-chip power estimates for the FT and MLPerf Inference benchmarks. The direct power consumption measurements taken by the …
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Average-case analysis of power consumption in embedded systems
Power efficiency is one of the most important constraints in the design of embedded systems since such systems are generally driven by batteries with limited energy budget or restricted power supply. In every embedded system, there are one or more processor cores to run the software and interact …
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Towards a silent fan: an investigation of low-speed fan aeroacoustics
… has several advantages over the existing sound power measurement rig built to the ISO 5136 standard at Dyson. The approach, which makes no assumptions about the relative power of different modes, has resulted in a rig that is much shorter. Unlike the ISO rig, it is capable of accurate …
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Analisi e gestione dei sistemi di accumulo dell’energia a batteria e degli impianti fotovoltaici
Le batterie rappresentano il cuore pulsante della transizione energetica ed economica globale. Questo concetto è ben illustrato nel Capitolo 1 con una breve panoramica sulle batterie tra passato, presente e futuro. Nel capitolo 2 viene presentato e descritto accuratamente, in ogni fase della sua …