Linearity Improvement for Cantilever Based Piezoelectric by Using Resonant Shifting Method
Keywords:Accelerometer, Energy Scavenger, Linearity, Self-Powered,
AbstractPiezoelectric cantilever as a resonant structure can be used both as a sensor as well as an energy harvester. When excited at a frequency near to its resonant, maximum electrical power is generated, therefore it functions as a micro-power generator. When excited to a frequency which is far from the range of the resonant, the voltage signal generated is comparatively linear at the non-resonant region and proportional to the acceleration level; therefore, in this region of frequency it functions as a sensor. This paper demonstrates the potential of the piezoelectric cantilever to be altered in a way to act as a battery-less acceleration sensor which is independent to the frequency. The frequency response of the piezoelectric cantilever is characterized by altering the cantilever length with the intention to shift the resonant frequency region of the piezoelectric cantilevers higher region so it will not influence the output response of the piezoelectric cantilever. The resonant frequency of cantilever at normal condition is 300Hz, increased to 320Hz after length reduction of 0.7cm, increased to 400Hz after length reduction of 1.0cm, 500Hz for reduction of 1.2cm, and lastly 780Hz for reduction of 1.5cm. After length reduction of 1.5cm, the linear response of the piezoelectric cantilever improved from 90% error deviation to 15% error deviation, which is a major improvement in the linearity of the piezoelectric cantilever’s output.
How to Cite
TRANSFER OF COPYRIGHT AGREEMENT
The manuscript is herewith submitted for publication in the Journal of Telecommunication, Electronic and Computer Engineering (JTEC). It has not been published before, and it is not under consideration for publication in any other journals. It contains no material that is scandalous, obscene, libelous or otherwise contrary to law. When the manuscript is accepted for publication, I, as the author, hereby agree to transfer to JTEC, all rights including those pertaining to electronic forms and transmissions, under existing copyright laws, except for the following, which the author(s) specifically retain(s):
- All proprietary right other than copyright, such as patent rights
- The right to make further copies of all or part of the published article for my use in classroom teaching
- The right to reuse all or part of this manuscript in a compilation of my own works or in a textbook of which I am the author; and
- The right to make copies of the published work for internal distribution within the institution that employs me
I agree that copies made under these circumstances will continue to carry the copyright notice that appears in the original published work. I agree to inform my co-authors, if any, of the above terms. I certify that I have obtained written permission for the use of text, tables, and/or illustrations from any copyrighted source(s), and I agree to supply such written permission(s) to JTEC upon request.