Active Control of a Clamped L-Connected Plate Power Flow by using a Piezoelectric Actuator

2017 ◽  
Keyword(s):  
Active Control ◽  
Piezoelectric Actuator ◽  
Power Flow ◽  
Connected Plate

Active control of power flow transmission in finite connected plate

2010 ◽  
Vol 329 (20) ◽  
pp. 4124-4135 ◽  
Author(s):  
Chun-Chuan Liu ◽  
Feng-Ming Li ◽  
Bo Fang ◽  
Yang Zhao ◽  
Wen-Hu Huang
Keyword(s):  
Active Control ◽  
Power Flow ◽  
Connected Plate

Active Performance Optimization of Cantilever Piezoelectric Energy Harvester

2014 ◽  
Author(s):  
M. Tavakkoli Anbarani ◽  
A. Alasty
Keyword(s):  
Resonance Frequency ◽  
Active Control ◽  
Piezoelectric Actuator ◽  
Performance Optimization ◽  
Energy Harvester ◽  
Distributed Parameter ◽  
Piezoelectric Energy ◽  
Significant Performance ◽  
Beam Type ◽  
Working Frequency

A Piezoelectric Energy Harvester (PEH) of cantilever beam type is developed to optimize the generated power by means of active control of moment of inertia of the beam. Distributed parameter equations of vibration of the beam are developed. Then the electromechanical response of the piezoelectric actuator is discussed. The harvester configuration is then described and it is shown that such a configuration can avoid the drastic power drop in presence of uncertainty around resonance frequency by applying voltage to the piezoelectric actuator. Finally the proposed harvester output power working frequency span is compared to conventional methods to show that the significant performance optimization in proposed method is achieved.

Active Control of Elastodynamic Vibrations of a Flexible Mechanism With Piezoelectric Actuator

1999 ◽  
Author(s):  
Ching-I Chen
Keyword(s):  
Control Theory ◽  
Active Control ◽  
Piezoelectric Actuator ◽  
Control Strategies ◽  
Piezoelectric Actuators ◽  
Structural Vibration ◽  
Control Technique ◽  
Vibration Modes ◽  
Time Sharing ◽  
Transient Dynamic

Abstract This study focused on the application of active vibration control strategies for flexible moving structures which degrade into transient dynamic vibration problem. These control strategies are based primarily on modal control methods in which the flexible moving structures are controlled by reducing their dominant vibration modes. This work numerically investigated active control of the elastodynamic response of a four-bar mechanical system, using a piezoelectric actuator. A controller based on the modified independent modal space control theory was also utilized. This control theory produced overall excellent performance in terms of achieving the desired closed-loop structural damping. The merits of this technique include its ability to manage the spill-over effect, i.e. eliminate the magnitude of vibrations associated with uncontrolled modes, using only a few selected modes for control. This control was accomplished using a time sharing technique, which reduces the number of piezoelectric actuators required to control a large number of vibration modes. Furthermore, this algorithm implements a procedure for determining the optimal locations for the piezoelectric actuators. The dynamics of a steel four-bar linkage was selected with a flexible coupler separated by six elements and one piezoelectric actuator was used in the numerical simulation. The optimal actuator position was located at the third element from the right to the left. Results in this study demonstrated that a highly desired the structural vibration damping could be achieved. This control technique can be applied to transient dynamic systems.

Dynamic Analysis of an Active Flexible Isolation System

2003 ◽  
Author(s):  
Kongjie Song ◽  
Lingling Sun ◽  
Yuguo Sun ◽  
Bing Zhang
Keyword(s):  
Active Control ◽  
Power Flow ◽  
Low Frequency ◽  
Coupled System ◽  
Isolation System ◽  
Active Isolation ◽  
Dynamic Modification ◽  
Mobility Method ◽  
Feed Forward Controller ◽  
Flexible Foundation

This paper is dedicated to the structure dynamic modification in an active isolation system supported by a flexible foundation, in order to improve the effectiveness of the active control strategy. The coupled vibration between machine-sprung and flexible foundation substructure is examined, using the subsystem mobility method. The vibration transmission in this coupled system is presented in terms of power flow. The interaction between structure controlled and the adaptive feed-forward controller is investigated theoretically. The numerical results show that: the location of the active mounts and the first mode frequency of the flexible foundation have evident influence on the effect of active control, especially at low-frequency band.

Decentralised active control of single ‐ frequency panel vibrations using piezoelectric actuator ‐ sensor pairs

2008 ◽  
Vol 123 (5) ◽  
pp. 3573-3573
Author(s):  
Alain Berry ◽  
Philippe Micheau ◽  
Rémi Louviot ◽  
Yvonnick Brunet
Keyword(s):  
Active Control ◽  
Piezoelectric Actuator ◽  
Single Frequency

Active control of a distributed-parameter structure using vortex power flow confinement

1997 ◽  
Vol 102 (3) ◽  
pp. 1648-1656 ◽  
Author(s):  
Nobuo Tanaka ◽  
Yoshihiro Kikushima ◽  
Masaharu Kuroda ◽  
Neil J. Fergusson
Keyword(s):  
Active Control ◽  
Power Flow ◽  
Distributed Parameter
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