Analysis & Active Suppression of Vibration in Leaf Spring - A Review
Keywords:
Leaf spring, Active Vibration, Accelerometer, FFT Analyzer Lead-Zirconium-Titanate-PZT actuator, Natural frequency.Abstract
The application of the present work of the project is identification and suppression of unwanted vibration to improve product quality. Leaf spring (Structural) vibration were measured with accelerometer, which converts an acceleration signal to an electronic voltage signal that can then be measured, analyzed and recorded with electronic hardware (FFT Analyzer) while using this electronic control to measure the vibration levels, process the data and drive a surface bonded piezoelectric (lead-Zirconium-Titanate-PZT) patches to counteract the vibration levels. The first four modes of the natural frequency of smart beams determine using finite element method at different position of an actuator from the fixed end of the structure, which are very close to the natural frequency determine by analytical method. An experimental work is conducted on a leaf spring which acts as cantilever smart beam with & without PZT patches, by interfacing the experimental setup. The free vibration of the mild steel, aluminum and composite smart beams were carried out by varying the initial displacement and input voltage to the PZT in order to find out the settling time and the damping factor of the beams. The results shows that the composite beam will have much more damping effect than mild steel leads to less settling time of aluminium.
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