Development and Validation of an Enhanced Coupled-Field Model for PZT Cantilever Bimorph Energy Harvester

摘要: The power source with the limited life span has motivated development of energy harvesters that can scavenge ambient environment and convert it into electrical energy. With coupled field characteristics structure to electricity, piezoelectric are under consideration as a means converting mechanical energy, goal realizing completely self-powered sensor systems. In this paper, two previous models in literatures for predicting open-circuit close-circuit voltages cantilever bimorph (PCB) harvester first described, is, equivalent spring mass-damper model circuit model. Then, an enhanced PCB based on another literature using conservation method is presented. Further, laboratory experiments carried out evaluate other literatures. comparison results show better predict proof mass bonded at free end order increase energy-harvesting level system.