Modeling and Experiment of a V-Shaped Piezoelectric Energy Harvester

Table 4

The simulation and experimental results under different conditions.

θ	Types	The first natural frequency (Hz)	The second natural frequency (Hz)	Open circuit voltage under the first natural frequency excitation (V/g)	Open circuit voltage under the second natural frequency excitation (V/g)
=45°	Experimental value	7	54	139	21.6
	Simulation value	7	55	127.00	20.48
=90°	Experimental value	9.2	29	83.2	22.9
	Simulation value	10	30	72.87	20.18
=135°	Experimental value	12.5	34.2	91.6	49.1
	Simulation value	14	36	88.70	40.32