Experimental study on semi-active control of frame-shear wall eccentric structure using MR dampers

2006 ◽  
Author(s):  
Xiu Ling Li, Sr. ◽  
Hong Nan Li, Sr.
Keyword(s):  
Experimental Study ◽  
Active Control ◽  
Shear Wall ◽  
Mr Dampers ◽  
Eccentric Structure

Monitoring the Inner Force of the Frame-Shear Wall Structure with MR Dampers by FBG Sensors

2011 ◽  
Vol 94-96 ◽  
pp. 1031-1035 ◽  
Author(s):  
Xiu Ling Li
Keyword(s):  
Shaking Table Test ◽  
Control Strategies ◽  
Shear Wall ◽  
Shaking Table ◽  
Wall Structure ◽  
Reinforced Concrete Frame ◽  
Software Environment ◽  
Concrete Frame ◽  
Mr Dampers ◽  
Eccentric Structure

The experiment system of a three-floor reinforced concrete frame-shear wall eccentric structure has been built based on Matlab/Simulink software environment and hardware/software resources of dSPACE. And then a shaking table test for the hosting structure with and without magnetorheological (MR) dampers is implemented subjected to three different ground motions. The FBG strain sensors were used in this experiment for strains measurement of the columns and monitoring of the appearing and developing of cracks under different stages. The experimental results show that the control strategies of MR dampers have significant effect on axial force of the column.

Numerical and experimental study of an active control logic for modifying the acoustic performance of single-layer panels

2021 ◽  
pp. 116608
Author(s):  
Francesco Ripamonti ◽  
Anthony Giampà ◽  
Riccardo Giona ◽  
Ling Liu ◽  
Roberto Corradi
Keyword(s):  
Experimental Study ◽  
Active Control ◽  
Single Layer ◽  
Control Logic ◽  
Acoustic Performance

A shuffled frog-leaping algorithm based mixed-sensitivity H∞ control of a seismically excited structural building using MR dampers

2017 ◽  
Vol 24 (13) ◽  
pp. 2832-2852 ◽  
Author(s):  
Xiufang Lin ◽  
Shumei Chen ◽  
Guorong Huang
Keyword(s):  
Active Control ◽  
Passive Control ◽  
Structural Parameters ◽  
Mr Damper ◽  
Inverse Model ◽  
Shuffled Frog Leaping Algorithm ◽  
Weighting Functions ◽  
Inference System ◽  
Mr Dampers ◽  
Shuffled Frog Leaping

An intelligent robust controller, which combines a shuffled frog-leaping algorithm (SFLA) and an H∞ control strategy, is designed for a semi-active control system with magnetorheological (MR) dampers to reduce seismic responses of structures. Generally, the performance of mixed-sensitivity H∞ (MSH) control highly depends on expert experience in selecting the parameters of the weighting functions. In this study, as a recently-developed heuristic approach, a multi-objective SFLA with constraints is adopted to search for the optimal weighting functions. In the proposed semi-active control, firstly, based on the Bouc–Wen model, the forward dynamic characteristics of the MR damper are investigated through a series of tensile and compression experiments. Secondly, the MR damper inverse model is developed with an adaptive-network-based fuzzy inference system (ANFIS) technique. Finally, the SFLA-optimized MSH control approach integrated with the ANFIS inverse model is used to suppress the structural vibration. The simulation results for a three-story building model equipped with an MR damper verify that the proposed semi-active control method outperforms fuzzy control and two passive control methods. Besides, with the proposed strategy, the changes in structural parameters and earthquake excitations can be satisfactorily dealt with.

Experimental study of the active control applied to the flow past a backward facing ramp

2018 ◽  
Vol 59 (3) ◽  
Author(s):  
Dan Hlevca ◽  
Patrick Gilliéron ◽  
Francesco Grasso
Keyword(s):  
Experimental Study ◽  
Active Control ◽  
Flow Past

SEMI-ACTIVE CONTROL USING MR DAMPERS FOR RANDOM GROUND MOTIONS

2019 ◽  
Author(s):  
Vishisht BHAIYA ◽  
Shiv Dayal BHARTI ◽  
Mahendra Kumar SHRIMALI ◽  
Tushar Kanti DATTA
Keyword(s):  
Active Control ◽  
Ground Motions ◽  
Mr Dampers

Experimental study on seismic behaviors of the welded L-shaped double steel plate-concrete composite shear wall

2021 ◽  
Vol 187 ◽  
pp. 106944
Author(s):  
Wenhui He ◽  
Yikun Wan ◽  
Yuyu Li ◽  
JinBin Bu ◽  
Jianliang Deng ◽  
...  
Keyword(s):  
Experimental Study ◽  
Steel Plate ◽  
Shear Wall ◽  
Composite Shear Wall ◽  
Composite Shear ◽  
Seismic Behaviors
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