Model based vibration control of smart flexible structure using piezoelectric transducers

Jovana Jovanova,Viktor Gavriloski,Marjan Djidrov,Goce Tasevski

doi:10.5937/fmet1501070j

Abstract

This paper focuses on development and implementation of optimal control algorithms for vibration control of flexible beam structures with embedded piezoelectric actuators. Piezoelectric transducers have become the leading active elements in smart structures based on their characteristics and reliability. Piezo laminated beam with collocated pairs of piezoelectric sensors and actuators is modelled using the methodology of system identification. The obtained model has been implemented in the model based optimal control algorithms. Linear quadratic regulator and model predictive control are developed and tested using LabVIEW and NI cRIO platform. The MPC algorithm shows better performance due to the constraint handling and requires more powerfull real-time and FPGA controller target.

Highlights

The advanced interdisciplinary research area of vibration control has brought a lot of intention to itself in the last decade developing and implementing different systems for vibration suppression in many different technical fields [1]
When smart structures are analyzed in the direction of active vibration control systems, their basic components are:
System identification is a methodology that can be defined as the mathematical modeling of dynamical systems based on measurement data and statistical approaches for finding models and to adequately describe the system behavior [8]

Summary

Introduction

The advanced interdisciplinary research area of vibration control has brought a lot of intention to itself in the last decade developing and implementing different systems for vibration suppression in many different technical fields [1]. The trend in design of mechanical systems has the tendency to lean towards more light structures in favor of flexibility, and vibration. When smart structures are analyzed in the direction of active vibration control systems, their basic components are: flexible structure, integrated sensors, integrated actuators, and controller. The mechanical structure is influenced by some disturbance and the sensors measure the disturbance influence on the structure itself. Controllers acquire these sensor signals in order to intelligently make use of them and to generate the appropriate control signals. The rapid developing technologies in sensors, actuators and real-time controllers has pushed the limits of vibration control systems to a complete new level introducing the mechatronic approach with high level of integration [3]

Methods

Results

Conclusion