Output performance analysis on a two-degreesof-freedom bistable piezoelectric vibration generator

Abstract

A two-degrees-of-freedom bistable piezoelectric vibration generator was designed for harvesting lowfrequency and weak-amplitude vibration energy in a real environment. And a dynamic model of a piezoelectric vibration generator system was established. The influence of the external excitation on the output characteristics of the twodegrees- of-freedom piezoelectric vibration generator system was simulated and analyzed. The results show that the twodegrees- of-freedom bistable piezoelectric vibration generator would do better in harvesting and converting lowfrequency and weak-amplitude vibration energy.