Characteristic Analysis Of The Piezoelectric Material Energy Harvesting Based On Vibration

The development of technology has brought tremendous advance in industry, butit also brings environmental pollution. The noise and vibration produced by variousvehicles and large machinery make people uncomfortable and affect people’s healthyseriously. With the widely research and application of smart materials, people pay alots attention to piezoelectric materials and electro-rheological materials in vibrationcontrol and reducing noise, because they both have rapid response, great electricperformance and no electromagnetic interference.These noise is also a available renewable energy as vibration energy. Converting,collecting and to use vibration energy in the air attract scientists’ attention too.Although the converting power of piezoelectric material is not high, with thedevelopment of low-power devices, power consumption is lower, and its applicationplatforms in energy harvesting are more and more. In this paper, two piezoelectricvibration energy collection devices base on vibration are studied: d31-cantilever typeand d33–Cylindrical type. On the basis of finite element simulation of two types ofpiezoelectric transducer, we designed the structure and carried out experiment ofenergy harvesting device. The details are as follows:1Summarizing the current situation of piezoelectric energy harvestingtechnology research, including piezoelectric structure research, study the piezoelectrictheory,design of piezoelectric circuit and deriving general expressions of generatedvoltage.2The static analysis and modal analysis of cantilever and cylindricalpiezoelectric vibrator is done using the finite element analysis software-ANSYS,obtaining natural frequencies and mode shapes of two piezoelectric transducer, andthe performance impact of sizes on the structure and power of piezoelectric vibrator isresearched.3Manufacturing different clamp part for two forms of vibration of thepiezoelectric vibrator: d31and d33, respectively, thus composing different piezoelectricenergy harvesting devices, power generation performance of each device is tested.4The application of the two forms of energy harvesting devices was studied.Using d31cantilever energy harvesting device light diode. And using d33cylindricalenergy harvesting device supply power for ER fluid, change can be found in the structure of ER fluid, completing the first visualization experimental verification thatpiezoelectric material can power electrorheological material.