Abstract
An electrical generating device using piezoelectric element (PZT) has been developed to convert structural vibration energy into electrical energy. This paper describes the electrical generation characteristics of PZT including Nb and laminated PZT under vibration load. Vibration tests are performed by using an experimental equipment composed of PZT, weights and a frame. Sinusoidal wave excitation tests are carried out under the condition of the constant initial compressive load acting on PZT. Effects of the number of PZT layers, vibration frequency and vibration load on generated voltage and electric power are evaluated.
