Simulation and Experiment of Piezoelectric Energy Harvester Based on Galloping Vibration
In order to recover the energy of the gas discharged from the actuator cylinder in pneumatic systems without back pres-sure,a piezoelectric energy harvester with a square tail column attached to rhombic spoiler column was designed,with piezoelectric ce-ramic as the core component.ANSYS finite element simulation software was employed to simulate the galloping vibration response of pie-zoelectric energy harvester under jet gas excitation,and the changes in aerodynamic lift and vibration displacement of the piezoelectric energy harvester during the fluid-structure bidirectional coupling process were analyzed.Experimental tests were carried out to measure the output voltage and power of the energy harvester.The results show that when the inlet pressure is 50 kPa,the thickness of square tail column is 3 mm,the angle of spoiler column is 80°,the distance between the inlet and the spoiler column is 30 mm,and the load resist-ance is 300 kΩ,the energy harvester achieves an output power of 215.67 μW with the power density of 90.77 W/m3.Compared with the existing research,it has significantly improved.
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维普
