scholarly journals Hierarchical semi-active control of base-isolated structures using a new inverse model of magnetorheological dampers

2010 ◽  
Vol 88 (7-8) ◽  
pp. 483-496 ◽  
Author(s):  
Arash Bahar ◽  
Francesc Pozo ◽  
Leonardo Acho ◽  
José Rodellar ◽  
Alex Barbat
Keyword(s):  
Active Control ◽  
Inverse Model ◽  
Magnetorheological Dampers ◽  
Isolated Structures

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.

Robust active control of hysteretic base-isolated structures: Application to the benchmark smart base-isolated building

2008 ◽  
Vol 15 (5) ◽  
pp. 720-736 ◽  
Author(s):  
Francesc Pozo ◽  
Pere Marc Montserrat ◽  
José Rodellar ◽  
Leonardo Acho
Keyword(s):  
Active Control ◽  
Isolated Structures

scholarly journals Displacement control of isolated structures with semi-active control devices

2003 ◽  
Vol 10 (2) ◽  
pp. 77-100 ◽  
Author(s):  
Chin-Hsiung Loh ◽  
L. Y. Wu ◽  
P. Y. Lin
Keyword(s):  
Active Control ◽  
Displacement Control ◽  
Control Devices ◽  
Isolated Structures
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