On the Nonlinear Behavior of the Piezoelectric Coupling on Vibration-Based Energy Harvesters

Figure 12

Maximum displacement-frequency curves with different nonlinear piezoelectric couplings for the LM, NLM-L, and NLM-Q models and three nondimension electrical resistive load.

(a)

(b)

(c)

(d)

(e)

(f)