Experimental Analysis On Vibration Energy Regeneration System Using Piezoelectric Sensor For Wideband Application

Azhar, Nur Hazlin (2019) Experimental Analysis On Vibration Energy Regeneration System Using Piezoelectric Sensor For Wideband Application. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

Text (24 Pages) Experimental Analysis On Vibration Energy Regeneration System Using Piezoelectric Sensor For Wideband Application.pdf - Submitted Version Download (369kB)

Abstract

Vibration energy produced high power in specific frequency but in a narrow bandwidth. This project consists of a method on widening frequency bandwidth by using non-uniform mass using concept centre of gravity. The movement of liquid when the beam bends has result in changes to the centre of mass which contributed in bandwidth widening. Piezoelectric sensor in cantilever structure is used as a transducer to convert vibration energy to electrical energy. The liquid mass is placed on the tip of the piezoelectric sensor. The liquid used to demonstrate in this project are differ in term of density and viscosity. Low acceleration (1 g) that applied to the sensor has given impact to the performance which has affect the movement of liquid for different viscosity. Two types of container (round and rectangular) were also used to determine the best shape to produce greater frequency bandwidth. Result shows that the frequency bandwidth is broadened by 2 times higher for honey in round container with low volume (10ml) compared to without tip-mass. This technique also increased the frequency bandwidth by 1.6 times compared with the solid tip-mass. The demonstrated technique overall has increased the frequency bandwidth without reducing the harvested power

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