Combined Effect of Bistability and Mechanical Impact on the Performance of a Nonlinear Electromagnetic Vibration Energy Harvester


This paper presents the look, modeling, fabrication, and characterization of a nonlinear bistable electromagnetic vibrational energy harvesting device. A folded cantilever structure based on low Young's modulus FR4 material reduces the operating frequency, whereas keeping the device footprint comparatively little. The bistability is introduced into the system by a pair of repulsively oriented NdFeB permanent magnets. A second nonlinear mechanism, i.e., mechanical impact between the oscillator and the bottom, is additionally taken into consideration. Analytical expressions are derived to get the restoring force and potential energy for such a system. The model was more numerically simulated and validated with experimental results of the fabricated device. The device generated most power of nineteen.3 μW at 1.five-g acceleration across an optimum resistive load of 1 kΩ, which was more improved by almost 70p.c with an optimized prototype. Both the numerical simulation and experimental results show broadening of the operational frequency range of the nonlinear bistable device by up to four.thirty five Hz at 0.6-g acceleration with respect to the linear counterpart. At higher input vibration, the harvester oscillates with massive amplitude and collides with the bottom, that abruptly changes the system dynamics. At an acceleration of 1.five g, this impact induced change in dynamics increases the peak power frequency and widens the bandwidth even any up to eight Hz (twenty twop.c of the height power frequency). Thus, the consequences of both bistability and mechanical impact are incorporated into a single device to get a fairly wideband operation.

Did you like this research project?

To get this research project Guidelines, Training and Code... Click Here

PROJECT TITLE : TAFC: Time and Attribute Factors Combined Access Control on Time-Sensitive Data in Public Cloud - 2017 ABSTRACT: The new paradigm of outsourcing information to the cloud is a double-edged sword. On the one hand,
PROJECT TITLE : Learning a combined model of visual Saliency for fixation prediction - 2016 ABSTRACT: A giant variety of saliency models, every primarily based on a totally different hypothesis, are proposed over the past twenty
PROJECT TITLE : A combined approach based on fuzzy classification and contextual region Growing to image segmentation - 2016 ABSTRACT: We have a tendency to present during this paper an image segmentation approach that combines
PROJECT TITLE : Translation Invariant Directional Framelet Transform Combined With Gabor Filters for Image Denoising - 2014 ABSTRACT: This paper is dedicated to the study of a directional lifting transform for wavelet frames.
PROJECT TITLE : Area-Delay Efficient Digit-Serial Multiplier Based on kPartitioning Scheme Combined With TMVP Block Recombination Approach - 2016 ABSTRACT: Shifted polynomial basis (SPB) and generalized polynomial basis (GPB)

Ready to Complete Your Academic MTech Project Work In Affordable Price ?

Project Enquiry