Experimental Analysis of the Vibrating modes of a Fish-Like Piezoelectric Actuated Beam

Author(s)

Barbosa, Arthur Silva ; da Silva, Maira Martins ; IEEE

• Document type: Journal article
• Source: 2021 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND BIOMIMETICS (IEEE-ROBIO 2021); v. N/A, p. 6-pg., 2021-01-01.

Abstract

This work presents the experimental assessment of the vibrating modes of a flexible beam that mimics the movement of fish swimming. The system actuation was carried out by Macro-Fiber Composite (MFC) patches in a bi-morph configuration. Initially, the first three modal shapes were acquired using impact tests. Then, these modal shapes were verified by exciting the system using the MFC patches and sinusoidal signal at the resonance frequencies. Finally, polynomial functions have been obtained for mathematically approximating these modal shapes using the least-squares method. These functions can be used in model-based control strategies. (AU)

• FAPESP's process: 18/15894-0 - Periodic structure design and optimization for enhanced vibroacoustic performance: ENVIBRO
• Grantee: Carlos de Marqui Junior
• Support Opportunities: Research Projects - Thematic Grants