Active control of vibrations of a metal panel by means of piezoelectric actuators and sensors

1997 ◽  
Author(s):  
Giorgio Diana ◽  
Federico Cheli ◽  
Matteo Coppola ◽  
Daniel C. Conrad
Keyword(s):  
Active Control ◽  
Piezoelectric Actuators ◽  
Piezoelectric Actuators And Sensors

scholarly journals Active control of mechanical structures in research and education

2013 ◽  
Vol 40 (2) ◽  
pp. 203-221
Author(s):  
Tamara Nestorovic
Keyword(s):  
Active Control ◽  
Smart Structures ◽  
Piezoelectric Actuators ◽  
Noise Attenuation ◽  
Research Experience ◽  
Active Vibration ◽  
Research And Education ◽  
Young Researchers ◽  
Piezoelectric Actuators And Sensors

Several crucial phases of the overall approach to development and design of smart structures are outlined in this paper. They are focused on control of lightweight mechanical structures with respect to active vibration and noise attenuation using piezoelectric actuators and sensors. The research experience and growing interest in development of smart structures have motivated introduction of courses on smart structures at universities, which are being studied extensively and with great interest by young researchers and students. Some of the author?s experiences regarding education in this field will be addressed as well.

Comparison of Active and Hybrid Vibration Confinement With Conventional Active Vibration Control

1999 ◽  
Author(s):  
Lawrence R. Corr ◽  
William W. Clark
Keyword(s):  
Vibration Control ◽  
Control Method ◽  
Numerical Study ◽  
Active Vibration Control ◽  
Piezoelectric Actuators ◽  
Control Technique ◽  
Flexible Beam ◽  
Velocity Feedback ◽  
Active Vibration ◽  
Piezoelectric Actuators And Sensors

Abstract This paper presents a numerical study in which active and hybrid vibration confinement is compared with a conventional active vibration control method. Vibration confinement is a vibration control technique that is based on reshaping structural modes to produce “quiet areas” in a structure as opposed to adding damping as in conventional active or passive methods. In this paper, active and hybrid confinement is achieved in a flexible beam with two pairs of piezoelectric actuators and sensors and with two vibration absorbers. For comparison purposes, active damping is achieved also with two pairs of piezoelectric actuators and sensors using direct velocity feedback. The results show that both approaches are effective in controlling vibrations in the targeted area of the beam, with direct velocity feedback being slightly more cost effective in terms of required power. When combined with passive confinement, however, each method is improved with a significant reduction in required power.

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