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 “"piezoelectric energy harvester"”.
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Design of a fluidic test bed for MEMS piezoelectric energy harvester
… transform the mechanical vibration to electrical energy, the scaled down model will be used as a test bed for future prototype PMPG designs. After modeling the Alaskan pipeline and designing it around dimensional analysis, a Vernier Low-g accelerometer is used to measure the vibration spectrum. …
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Model parameter identification and model class selection in piezoelectric energy harvester based on bayesian inference
… updating of the electro-mechanical properties of Piezoelectric Energy Harvesters (PEHs) using experimental data within a Bayesian inference setting is discussed. The implementation requires: a predictive model for the harvester response; an assumption for its prediction error; a prior multivariate …
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Experimental and Computational Study of Vibration-Based Energy Harvesting Systems for Self-Powered Devices
Energy harvesting of ambient and aeroelastic vibrations is important for reducing the dependence of wireless sensing and networks on batteries. We develop a configuration for a piezoelectric energy harvester with the capability to wirelessly communicate vibration measurements while using those …
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MICRO-CIRCUIT DIODE FOR ULTRA-LOW-POWER ENERGY HARVESTING
Harvesting energy from ultra-low-power vibration energy sources typically employs a rectifier circuit as the first power conditioning stage. The Schottky diode has a 0.15 V - 0.2 V threshold voltage and can not extract energy efficiently at low voltage. Other technologies such as MOSFET bridge or …
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Piezoelectric Energy Harvesting for Powering Wireless Monitoring Systems
… led to an explosion of research in substitute energy technologies. Traditional batteries are still the most widely used power source for these applications currently but have been blamed for chemical pollution, high maintenance cost, bulky volume, and limited energy capacity. Ambient energy in …
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A study of a piezoelectric energy harvesting system using magnetorheological fluids
This thesis reports the study of a piezoelectric energy harvesting system using a thin layer of magnetorheological fluid as a soft impact mechanism to enhance the frequency of the energy generator. Currently, the major bottleneck of vibration energy harvesting is the dynamic nature of vibrations in …
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Design and reliability-based optimization of the piezoelectric flex transducer
… devices has resulted in a high demand for mobile energy harvesters. The main contribution of this thesis is to optimize the novel piezoelectric energy harvesting device called the piezoelectric flex transducer, which was developed by other researchers for the purpose of harvesting biokinetic …
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Broadband Piezoelectric Energy Harvesting and Vibration Suppression Using Nonlinear Mechanisms
Harvesting ambient vibration energy provides a promising solution to implement self-powered microwatts to milliwatts low-power electronic devices, as an alternative to batteries. Due to the high power density and simple construction, piezoelectric transducers have attracted the most attention in …
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Piezoelectric-based Multi-Scale Multi-Environment Energy Harvesting
Energy harvesting is a technology for generating electrical power from ambient or wasted energy. It has been investigated extensively as a means of powering small electronic devices. The recent proliferation of devices with ultra-low power consumption - devices such as RF transmitters, sensors, and …
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Towards a Self-Powered Structural Health Monitoring Smart Tire
… health monitoring (SHM) smart tire using piezoelectric materials. While this work is divided into two components: SHM and energy harvesting, the context of smart tire in this work is defined as the development of a SHM system that (i) has self-powering capabilities, and (ii) addresses the …
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Energy processing circuits for low-power applications
… constantly being proposed to further improve the energy efficiency of electronic circuits. A critical part of these energy conscious systems are the energy processing and power delivery circuits that interface with the energy sources and provide conditioned voltage and current levels to the load …
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Microtransfer printing of elastomeric active composites
… elastomer was evaluated as a vibrational energy harvester. A miniaturized, broadband energy harvester working at low frequency is of great interest as a means of powering the growing field of small, wireless electronics. In this application, the PZT in the active elastomeric composite acts …