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Analytical modelling and optimization of a piezoelectric cantilever energy harvester with in-span sttachment
- Source :
- Micromachines, Micromachines, MDPI, 2020, Piezoelectric Nanogenerators for Micro-Energy and Self-Powered Sensors, 11 (6), ⟨10.3390/mi11060591⟩, Volume 11, Issue 6, Micromachines, Vol 11, Iss 591, p 591 (2020)
- Publication Year :
- 2020
- Publisher :
- MDPI, 2020.
-
Abstract
- International audience; In this paper, the location of masses and of a piezoelectric patch for energy harvesting reported onto a vibrating cantilever beam is studied and optimized. To this aim, a genetic algorithm is adapted and utilized to optimize the voltage amplitude generated by the piezoelectric patches by choosing attachment mass, attachment mass moment of inertia, attachment location, piezoelectric patch location and force location on the beam as parameters. While an analytical approach is proposed to evaluate the voltage amplitude, a multi-layer perceptron neural network is trained by the derived characteristic matrix to obtain an approximate function for natural frequencies based on the attachment parameters. The trained network is then used in the core of genetic algorithm to find the best optimization variables for any excitation frequency. Numerical simulation by COMSOL Multiphysics finite element software validates the calculated voltage by analytical approach. The optimization method successfully matches the natural frequency of the beam with the excitation frequency which therefore maximizes the output energy. On the other hand, the superiority of the optimized design over the conventional configuration in harvesting the energy at high frequency excitation is also approved.
- Subjects :
- energy harvesting
Cantilever
neural network
lcsh:Mechanical engineering and machinery
Acoustics
Multiphysics
02 engineering and technology
7. Clean energy
Article
piezoelectric patch
0203 mechanical engineering
genetic algorithm
[INFO.INFO-RB]Computer Science [cs]/Robotics [cs.RO]
lcsh:TJ1-1570
Electrical and Electronic Engineering
Electronique
Physics
Computer simulation
Energy harvesting
Mechanical Engineering
Natural frequency
021001 nanoscience & nanotechnology
Modélisation et simulation
Cantilever configuration
[INFO.INFO-MO]Computer Science [cs]/Modeling and Simulation
Neural network
[SPI.TRON]Engineering Sciences [physics]/Electronics
020303 mechanical engineering & transports
Genetic algorithm
Control and Systems Engineering
Robotique
Piezoelectric patch
0210 nano-technology
Energy (signal processing)
Beam (structure)
cantilever configuration
Voltage
Subjects
Details
- Language :
- English
- ISSN :
- 2072666X
- Database :
- OpenAIRE
- Journal :
- Micromachines, Micromachines, MDPI, 2020, Piezoelectric Nanogenerators for Micro-Energy and Self-Powered Sensors, 11 (6), ⟨10.3390/mi11060591⟩, Volume 11, Issue 6, Micromachines, Vol 11, Iss 591, p 591 (2020)
- Accession number :
- edsair.doi.dedup.....d5cd96df99a301b9fb64cf208592f8eb