Simulation analysis and experiment of helicopter vibration energy harvesting device based on key piezoelectric materials

The application of Structural Health Monitoring (SHM) in international aviation has evolved from its initial focus on monitoring aircraft structural loads to encompassing damage detection, localization, and structural lifespan prediction. Traditional systems face challenges such as complex cable arrangements and limitations imposed by battery life and replacement difficulties. In response, this study explores a novel approach using vibration energy harvesting (VEH) to power helicopter SHM systems. By leveraging piezoelectric materials and VEH technology, we designed a miniature vibration energy harvester based on the key piezoelectric material Pb(Mg₁/₃Nb₂/₃)O₃-PbTiO₃ (PMN-PT). Finite element simulations and experimental validations demonstrate stable performance of the system under varying temperatures and accelerations, showcasing its potential reliability in practical applications. This research not only contributes technical insights for the development of Helicopter Health and Usage Monitoring Systems (HUMS) but also underscores the significant potential of vibration energy harvesting technology in enhancing energy sustainability.