Optimal Vibration Suppression of Structures Under Random Base Excitation Using Semi-Active Mass Damper

2010 ◽  
Vol 132 (4) ◽  
Author(s):  
F. Yang ◽  
E. Esmailzadeh ◽  
R. Sedaghati
Keyword(s):  
Vibration Suppression ◽  
Mr Damper ◽  
Friction Model ◽  
Structural Vibration ◽  
Linear Quadratic ◽  
Active Mass ◽  
Lugre Friction Model ◽  
Mass Damper ◽  
Active Mass Damper ◽  
Control Methodology

The vibration suppression of structures using a semi-active mass damper is investigated in this study. A magnetorheological (MR)-damper is utilized to design the semi-actively controlled mass damper. The inverse MR-damper model is developed on the basis of an improved LuGre friction model, and combined with a designed H2/Linear-Quadratic-Gaussian (H2/LQG) controller, in order to control the command current of the MR-damper to suppress structural vibration levels effectively. Illustrated examples are considered to investigate the vibration suppression effectiveness of a semi-active mass damper with a MR-damper, using the developed control methodology. The simulation results were compared with those reported in literature in order to validate the presented methodology.

Seismic Response Controlled Structure With Semi-Active Mass-Damper

2008 ◽  
Author(s):  
Fan Yang ◽  
Ramin Sedaghati ◽  
Ebrahim Esmailzadeh
Keyword(s):  
Vibration Suppression ◽  
Mr Damper ◽  
Friction Model ◽  
Structural Vibration ◽  
Active Mass ◽  
Lugre Friction Model ◽  
Mass Damper ◽  
Active Mass Damper ◽  
Controlled Structure ◽  
Magneto Rheological

The structural vibration suppression using active and semi-active mass damper is investigated. The controller for full-active controlled mass dampers is designed using the H2/LQG method. Magneto-Rheological (MR) damper is used to design the semi-active controlled mass damper. The inverse MR-damper model is developed on the base of an improved LuGre friction model. It combined with the proposed H2/LQG controller to control the input current of the MR-damper to suppress the structural vibration efficiently. The illustrated examples are presented to compare the vibration suppression effectiveness of semi-active mass damper with MR-damper using the proposed controller with those reported in literatures in order to illustrate the validity of the proposed methodology.

scholarly journals Suppression the structural vibration by active-mass-damper with DVFB.

1991 ◽  
Vol 57 (536) ◽  
pp. 1143-1147
Author(s):  
Seiya UENO ◽  
Takashi KIDA ◽  
Isao YAMAGUCHI ◽  
Keiichi HIRAKO ◽  
Masaki TANAKA
Keyword(s):  
Structural Vibration ◽  
Active Mass ◽  
Mass Damper ◽  
Active Mass Damper

scholarly journals Active Mass Damper for Reducing Wind and Earthquake Vibrations of a Long-Period Bridge

Actuators ◽  
2020 ◽  
Vol 9 (3) ◽  
pp. 66
Author(s):  
Seongkyu Chang
Keyword(s):  
Dynamic Properties ◽  
Damping Ratio ◽  
Harmonic Load ◽  
Control Effect ◽  
Linear Quadratic ◽  
Active Mass ◽  
Long Period ◽  
Bridge Model ◽  
Mass Damper ◽  
Active Mass Damper

An active mass damper (AMD) was developed that uses a linear motor and coil spring to reduce the vertical vibration of a long-period cable-stayed bridge subjected to wind and earthquake loads. A scaled-down bridge model and AMD were fabricated, and the control effect of the AMD was investigated experimentally and analytically. The AMD was controlled via a linear quadratic Gaussian algorithm, which combines a linear quadratic regulator and Kalman filter. The dynamic properties were investigated using a 1/10 scale indoor experimental model, and the results confirmed that the measured and analytical accelerations were consistent. A vibrator was used to simulate the wind-induced vibration, and the experimental and analytical results were consistent. The proposed AMD was confirmed to damp the free vibration and harmonic load and increase the damping ratio of the bridge model from 0.17% to 9.2%. Finally, the control performance of the proposed AMD was numerically investigated with the scaled-down bridge model subjected to the El Centro and Imperial Valley-02 earthquakes. These results were compared with those of a TMD, and they confirmed that the proposed AMD could reduce excessive vertical vibrations of long-period cable-stayed bridges subjected to wind and earthquakes.

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