A new electromagnetic shunt damping treatment and vibration control of beam structures

2009 ◽  
Vol 18 (4) ◽  
pp. 045009 ◽  
Author(s):  
Hongpan Niu ◽  
Xinong Zhang ◽  
Shilin Xie ◽  
Pengpeng Wang
Keyword(s):  
Vibration Control ◽  
Beam Structures ◽  
Shunt Damping

Reduction of structural vibrations with the piezoelectric stacks ring

2020 ◽  
Vol 64 (1-4) ◽  
pp. 729-736
Author(s):  
Jincheng He ◽  
Xing Tan ◽  
Wang Tao ◽  
Xinhai Wu ◽  
Huan He ◽  
...  
Keyword(s):  
Vibration Control ◽  
Mechanical Energy ◽  
Electrical Energy ◽  
Structural Vibrations ◽  
Rotor Systems ◽  
Fea Model ◽  
Piezoelectric Stacks ◽  
Shunt Damping ◽  
Reduction Effect ◽  
Euler Bernoulli Beam

It is known that piezoelectric material shunted with external circuits can convert mechanical energy to electrical energy, which is so called piezoelectric shunt damping technology. In this paper, a piezoelectric stacks ring (PSR) is designed for vibration control of beams and rotor systems. A relative simple electromechanical model of an Euler Bernoulli beam supported by two piezoelectric stacks shunted with resonant RL circuits is established. The equation of motion of such simplified system has been derived using Hamilton’s principle. A more realistic FEA model is developed. The numerical analysis is carried out using COMSOL® and the simulation results show a significant reduction of vibration amplitude at the specific natural frequencies. Using finite element method, the influence of circuit parameters on lateral vibration control is discussed. A preliminary experiment of a prototype PSR verifies the PSR’s vibration reduction effect.

Vibration Control of Long-Span Beams: Experimental and Analytical Study of Beam Structures Incorporated with Connection Dampers

2004 ◽  
Vol 10 (5) ◽  
pp. 707-730 ◽  
Author(s):  
X. M. Tan ◽  
J. M. Ko
Keyword(s):  
Fractional Derivative ◽  
Vibration Control ◽  
Analytical Method ◽  
Analytical Study ◽  
Beam Structures ◽  
Viscoelastic Dampers ◽  
Long Span ◽  
Parametric Studies ◽  
Vertical Vibrations ◽  
Structural Behaviors

In order to reduce the vertical vibrations of long-span beam structures subjected to human activities or machinery running, a type of beam-column connection incorporated with viscoelastic dampers is designed and the effectiveness in vibration control is proved experimentally. An analytical method implemented with a fractional derivative model for structures with such damping devices is then proposed. By comparing analytical results with test data, the method is verified to be able to predict structural behaviors very well. Based on the parametric studies being carried out, useful guidelines are achieved for design of beam structures with connection dampers.

ANFIS Active Vibration Control of Flexible Beam Structures

Volume 1 ◽  
2004 ◽  
Author(s):  
S. Z. Mohd. Hashim ◽  
M. O. Tokhi
Keyword(s):  
Vibration Control ◽  
Fuzzy Inference System ◽  
Dynamic Range ◽  
Vibration Suppression ◽  
Fuzzy Inference ◽  
Least Squares Method ◽  
Active Vibration Control ◽  
Flexible Beam ◽  
Beam Structures ◽  
Inference System

This paper presents the development of an adaptive neuro-fuzzy inference system (ANFIS) controller for vibration control of flexible beam structures. ANFIS constructs a fuzzy inference system (FIS) whose membership function parameters are tuned (adjusted) using the backpropagation algorithm and least squares method. This allows the fuzzy system to learn from the data modeling. To allow the non-linear dynamics of the system be incorporated within the design, a pseudo random binary signal (PRBS) covering the dynamic range of interest of the system is used to train the ANFIS model, which gives good output prediction. Simulation results showing the performance of the developed control scheme in vibration suppression of flexible beam structures, with changes in the excitation signal, are presented and discussed.

scholarly journals Self-Tuning Active Vibration Control in Flexible Beam Structures

1994 ◽  
Vol 208 (4) ◽  
pp. 263-278 ◽  
Author(s):  
M O Tokhi ◽  
M A Hossain
Keyword(s):  
Vibration Control ◽  
Vibration Suppression ◽  
Finite Difference Methods ◽  
Active Vibration Control ◽  
Digital Signal ◽  
Flexible Beam ◽  
Beam Structures ◽  
Single Input Single Output ◽  
Active Vibration ◽  
Single Input

This paper presents the design and performance evaluation of an adaptive active control mechanism for vibration suppression inflexible beam structures. A cantilever beam system in transverse vibration is considered. First-order central finite difference methods are used to study the behaviour of the beam and develop a suitable test and verification platform. An active vibration control algorithm is developed within an adaptive control framework for broadband cancellation of vibration along the beam using a single-input multi-output (SIMO) control structure. The algorithm is implemented on a digital processor incorporating a digital signal processing (DSP) and transputer system. Simulation results verifying the performance of the algorithm in the suppression of vibration along the beam, using single-input single-output and SIMO control structures, are presented and discussed.

Study on the Passive Vibration Control of Gear System

2010 ◽  
Vol 29-32 ◽  
pp. 814-818
Author(s):  
Cheng Zhong Gu ◽  
Xin Yue Wu ◽  
Ping Hao Zhang
Keyword(s):  
Vibration Control ◽  
Gear System ◽  
Viscoplastic Material ◽  
Passive Vibration Control ◽  
Effective Measure ◽  
Viscoelastic Dampers ◽  
Damping Characteristics ◽  
System Vibration ◽  
Shunt Damping ◽  
Piezoelectric Shunt

The passive vibration control is a very effective measure to gear system. But there exist some limitations. This paper viewed the development of the passive vibration control of gear system, and researched the damping characteristics of the friction dampers and viscoelastic dampers intensively. Firstly, the limitations of the existence passive damping technology are pointed out. Secondly, the feasibility and validity of piezoelectric shunt damping is guaranteed through experimentation on the gear system vibration control. Thirdly, a new hybrid damping, piezoelectric- viscoplastic material damping, is proposed, which extracts the advantages of piezoelectric shunt damping and viscoplastic damping.

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