Theoretical analysis of piezoelectric cantilever sensor

In this article, the sensing effect of piezoelectric cantilever sensor subjected to mechanical excitation are discussed. General analytical expression relating voltage generations to applied mechanical input excitations are derived based on the constitutive equations of these bending devices. It is observe that the clamping effect of each component in piezoelectric cantilever devices decreases the dielectric constant. The sensitivities of double layer piezoelectric cantilever sensor are higher as compare to the triple layer piezoelectric cantilever sensor.