Abstract

Piezoelectric materials are widely used as an input transducer to harvest electrical energy. In this research, an optimized piezoelectric transducer (PZT-5H) has been designed for maximum efficiency. The transition system consists of an ideal mass, spring and damper. It has been modeled using MATLAB Simscape Toolbox™. Routh–Hurwitz criterion is applied to assess the stability of the transition system. The root-locus and step-response plots are generated for the stability analysis. Effects of varying stiffness, damping coefficient and thickness have been studied in designing of stack PZT-5H. The statistical analysis based on a Taguchi design of experiment and analysis of variance approaches is implemented to obtain the optimum output response from the energy harvester. Consequently, interval plots and a regression model are designed to establish an adequate relationship between the controllable factors and optimum output response of the energy harvester. The results are compared with the literature and they correlate well with each other.

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