TY - GEN
T1 - On the effect of driving amplitude, frequency and frequency-amplitude interaction on piezoelectric generated power for MFC unimorph
AU - Khazaee, Majid
AU - Rezaniakolaei, Alireza
AU - Rosendahl, Lasse
PY - 2019
Y1 - 2019
N2 - In this paper, an experimental study on effects of frequency, amplitude and frequency-amplitude interaction of base excitation on vibration piezoelectric energy harvesters is presented. To do so, a unimorph piezoelectric harvester made from macro fiber composite (MFC) piezoelectric layer is tested. A two-factor factorial design with two replications is considered, in which frequency and amplitude of driving vibration are the treatment factors. For changing treatment factors, an appropriate frequency range is considered to include the device fundamental frequency and three excitation levels are considered. In order to investigate the effects of treatment factors on the power output, a linear model is considered. Results show that increasing amplitude of excitation vibration causes a stiffness softening behavior of the piezoelectric oscillatory beam leading to reduction in the harvester natural frequency. In addition, from the frequency-amplitude interaction analysis, output power is much more sensitive to vibration amplitude for driving frequencies near the harvester natural frequency compared to frequencies far away from the harvester natural frequency.
AB - In this paper, an experimental study on effects of frequency, amplitude and frequency-amplitude interaction of base excitation on vibration piezoelectric energy harvesters is presented. To do so, a unimorph piezoelectric harvester made from macro fiber composite (MFC) piezoelectric layer is tested. A two-factor factorial design with two replications is considered, in which frequency and amplitude of driving vibration are the treatment factors. For changing treatment factors, an appropriate frequency range is considered to include the device fundamental frequency and three excitation levels are considered. In order to investigate the effects of treatment factors on the power output, a linear model is considered. Results show that increasing amplitude of excitation vibration causes a stiffness softening behavior of the piezoelectric oscillatory beam leading to reduction in the harvester natural frequency. In addition, from the frequency-amplitude interaction analysis, output power is much more sensitive to vibration amplitude for driving frequencies near the harvester natural frequency compared to frequencies far away from the harvester natural frequency.
KW - Piezoelectric Harvester
KW - Driving Frequency
KW - Vibration Amplitude
KW - Vibration Amplitude, Nonlinear Behaviour
KW - Frequency-Amplitude Interaction
UR - https://iiav.org/archives_icsv/2019_icsv26/index28ab.html?va=viewpage&vaid=428&said=7&session_id=52
UR - http://www.scopus.com/inward/record.url?scp=85073018772&partnerID=8YFLogxK
M3 - Article in proceeding
AN - SCOPUS:85084014727
T3 - International Congress on Sound and Vibration (ICSV)
BT - Proceedings of the 26th International Congress on Sound and Vibration, ICSV 2019
PB - Canadian Acoustical Association
T2 - 26th International Congress on Sound and Vibration
Y2 - 7 July 2019 through 11 July 2019
ER -