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 14 of 14 for “"Power harvesting"”.
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Analytical Models to Predict Power Harvesting with Piezoelectric Materials
… materials, it is possible to harvest power from vibrating structures. It has been proven that micro- to milliwatts of power can be generated from vibrating systems. We develop definitive, analytical models to predict the power generated from a cantilever beam and cantilever plate. …
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A comparison of power harvesting techniques and related energy storage issues
Power harvesting, energy harvesting, power scavenging, and energy scavenging are four terms commonly used to describe the process of extracting useful electrical energy from other ambient energy sources using special materials called transducers that have the ability to convert one form of energy …
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Macro-Fiber Composites for Sensing, Actuation and Power Generation
… sensing and actuation for vibration control, and power harvesting. The MFC is constructed using piezofibers embedded in an epoxy matrix and coated with Kapton skin. The construction process of the MFC affords it vast advantages over the traditionally used piezoceramic material. The MFC is …
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Influence of High Aspect Ratio Nanoparticle Filler Addition on Piezoelectric Nanocomposites
… nanogenerators (PNGs) are a new class of energy harvesting materials that show potential as a direct energy source for low powered electronics. Recently, piezoelectric polymers have been utilized for PNG technology due to low toxicity, high flexibility, and facile solution processing which …
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Developing a Self-Powered, Wireless Damage Detection System for Structural Health Monitoring Applications
… health monitoring system incorporates a low power wireless transmitter that sends a warning signal when damage is detected in a structure. Two damage detection techniques were implemented on the SHM system and successfully used for evaluating structural damage. The first impedance-based …
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Non-intrusive vibration monitoring in US Naval and US Coast Guard ships
… The proposed monitoring system includes a self-power harvesting accelerometer installed in motors on US Navy and US Coast Guard vessels used to monitor equipment vibration and diagnose the source of the high vibrations. Utilizing the observations and tools designed by the VAMPIRE project as a …
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Advancing Autonomous Structural Health Monitoring
… health monitoring sensor are also presented. Power harvesting from ambient energy allows a prototype to be operable from a rechargeable power source. Aerospace vehicles are equipped with thermal protection systems to isolate internal components from harsh reentry conditions. While the thermal …
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Dynamics and Control of Very High Altitude Tethered Balloons
… ranging from telecommunications to solar power harvesting, but none have been practically implemented to date. The application considered in this research is Stratospheric Particle Injection for Climate Engineering for which the setup comprises of several unique features that are expected …
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Power and Energy Transduction In Piezoelectric Wafer Active Sensors For Structural Health Monitoring: Modeling and Applications
… focuses on three areas: (I) modeling of PWAS power and energy transduction; (II) PWAS installation and durability study; (III) novel miniaturized PWAS approaches for SHM.</p> <p>In part I, the dissertation presents a systematic investigation of power and energy transduction of PWAS. The PWAS …
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Wirelessly Powered Sensor Design with On-Chip Antenna in CMOS Technology
… the system size to millimeter scale, wireless power harvesting front-end with on-chip antenna is utilized to extend the operating distance. The operating frequency of the wireless power link is optimized for mm-sized on-chip antenna to minimize the device size and to achieve a higher received …
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Smart Systems Based on Electroactive Polymers
The purpose of this thesis is the development and analysis of smart systems based on electroactive polymers (EAPs). Thanks to their sensing and actuation capabilities, devices based on EAPs, like ionic polymer metal composites (IPMCs), realized by using a noble metal or ionic polymer polymer …
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Active fibre-reinforced composites with embedded shape memory alloys
… morphing structures, self-healing structures and power harvesting devices. In particular, shape memory alloy actuators integrated within a composite actively control the structural shape or stiffness, thus influencing the composite static and dynamic properties. Envisaged applications include, …
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Generátorové snímače
Diplomová práce se zabývá generátorovými snímači, ve funkci zdroje energie. Tím, jak se požadavky na napájení mikroelektronických obvodů snižují, stávají se energetické zdroje z prostředí kolem snímače více perspektivní. Za poslední roky dosáhli baterie vyšších hodnot kapacity, stále je však …
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An embedded, wireless-energy-harvesting platform (E-WEHP) for powering sensors using existing, ambient, wireless signals present in the air
… is to develop an embedded, wireless, energy-harvesting prototype (E-WEHP) that can power on and sustain embedded sensing functions using the power present in ambient wireless signals in urban areas. This research is part of a bigger effort towards greening RF circuits and applications in …