Abstract
An electrical power 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 and PZT including several kinds of additives under vibration load. Vibration tests are performed by using an experimental equipment composed of PZT, weights and a support frame structure. Sinusoidal wave excitation tests are carried out under the condition of the constant initial compressive load acting on PZT. Effects of several kinds of additives, vibration frequency and vibration load on generated voltage and electric power of PZT are evaluated from the vibration test results.
