Abstract
Oscillation-based linear energy harvesters are often excited by random, band-limited, slowly varying forces. When the excitation bandwidth is limited such that natural frequencies of electromechanical energy harvester are not excited, linear devices lose their efficiency, and nonlinear structures with negative stiffness can be used to enhance the conversion efficiency by performing frequency up-conversion. It is shown here that nonlinear, bistable oscillators perform considerably better than their linear counterpart under band-limited excitation, in certain regions. This is contrary to commonly modeled, wideband, or white noise excitation, where nonlinear potential has no or little effect on the energy output. A sharp increase in performance is observed for band-limited random excitation along a well-defined region in the input-level and bandwidth plane. Having defined this region, the harvesting device can be adaptively tuned in order to keep the power output levels high. The results of simulated, partia...
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Intelligent Material Systems and Structures
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
