Modeling of Piezoelectric Plate and Control Test

2010 ◽  
Vol 139-141 ◽  
pp. 1769-1774
Author(s):  
Jun Yao
Keyword(s):  
Vibration Control ◽  
Multiple Input Multiple Output ◽  
Control Technique ◽  
Modal Control ◽  
Damping Control ◽  
Intelligent Structures ◽  
Modal Damping ◽  
Input Multiple Output ◽  
Coupling Mode ◽  
Piezoelectric Structures

This paper introduces mechanics and electronic coupling mode of piezoelectric intelligent structures, and discusses the key technology and potential prospect of intelligent structures in application of vibration control. A multiple-input multiple-output transfer function model of piezoelectric plates is derived and an analogy for modal control between the piezoelectric structures and general ones is established. A concept, "piezoelectric vibration modes", is presented. Based on this concept and by experiment development, a "quasi-independent modal control" technique is presented, attempting to approach, with hardware as simple as possible, independent modal control. The experiment progress and results for multiple modal damping control show its effectiveness and practicality. The modal damping of piezoelectric intelligent structures can be increased enormously. They have good advantage and potential prospect in application of structure vibration control.

Enhancing Vibration Damping of Smarts Structures by Energy Transfer between Modes

2014 ◽  
Vol 664 ◽  
pp. 341-345
Author(s):  
Zhen Wang ◽  
Claire Jean-Mistral ◽  
Simon Chesné ◽  
Luc Gaudiller
Keyword(s):  
Energy Transfer ◽  
Vibration Control ◽  
New Technique ◽  
Control Technique ◽  
Voltage Source ◽  
Low Power Consumption ◽  
Modal Control ◽  
A New Technique ◽  
Vibration Modal ◽  
Original Approach

In a context of embedded structures, the next challenge is to develop an efficient, energetically autonomous vibration control technique. Synchronized Switch Damping techniques (SSD) have demonstrated interesting properties in vibration control with a low power consumption. The damping attenuation can be improved thanks to energy transfer between a voltage source and the SSD circuit. Harvesting energy on a second structure can provide this voltage source but drastically complex the overall system. We propose here a new technique to enhance the classic SSD circuit due to energy harvesting. Our original approach consists in transferring energy between modes of a same structure: energy is harvested on non-controlled mode to increase the attenuation of a targeted mode. In this paper, we present theoretical analysis and numerical simulations of our energy-transfer architecture applied to an academic case, a free-clamped beam. Our electrical architecture called Synchronized Switching Damping and Harvesting (SSDH) is composed of a harvesting circuit (Synchronized Switch Harvesting on Inductor SSHI), a dc-dc converter (Buck-Boost topology) and a vibration modal control circuit (similar to a Synchronized Switch on Voltage SSDV). In a multi-sine excitation, an increase of the attenuation damping of 3.8dB with our new technique compared to classic SSDI is achieved.

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