FINDING VIBRATION MODES FOR A PIEZO DRIVEN ROBOT STRUCTURE

Iulian LUPEA, Ioan CIASCAI

Abstract


Abstract: The modes of vibration of a piezoelectric-driven small scale robot are experimentally identified. The structure is excited harmonically by using a sinusoidal waveform in a wide frequency band by using a particular command module based on a microcontroller or by using dedicated excitation approaches. Fine sand spread over the flat structure is showing the structural resonances and approximately the nodes of vibration. The finite element modal analysis is helping to find the modal shapes and consequently the legs attachment spots on the vibrating robot structure.

 

Keywords: piezoelectric ceramic, miniature mobile robot, modes of vibration, modal shape, resonance.


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References


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