QFT control for vibration reduction in structures equipped with MR dampers

Zapateiro, Mauricio; Luo, Na; Karimi, Hamid Reza

doi:10.1109/acc.2008.4587310

Cited by 3 publications

(3 citation statements)

References 4 publications

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“…the nonlinear dynamics of the MR damper were ignored. A step further was performed by Zapateiro et al [23] by proposing the inclusion of the hysteretic dynamics of MR dampers in the QFT control design and its feasibility was proved by numerical simulations. This paper presents our research work carried out on an experimental setup available at the Smart Structures Technology Laboratory, University of Illinois at Urbana-Champaign (SSTL), which represents the problem of vibration control of a large-scale three-story building with an MR damper at its first floor subject to seismic motions.…”

Section: Introductionmentioning

confidence: 99%

Real-time hybrid testing of semiactive control strategies for vibration reduction in a structure with MR damper

Zapateiro

Karimi

Luo

et al. 2009

Struct. Control Health Monit.

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Magnetorheological (MR) dampers have been widely studied and employed to solve the vibration problem in structures such as buildings and bridges. It is known that MR dampers can generate high damping forces with low-energy requirements and low-cost productions. However, the complex dynamics that characterize MR dampers make difficult the control design to achieve the vibration reduction goals in an efficient manner. In this paper, semiactive controllers based on the backstepping and quantitative feedback theory techniques are proposed and their performances are compared with each other on the problem of vibration control in a structure with an MR damper. They are applied to a large-scale three-story building with an MR damper at its first floor subject to seismic motions. The performance of the proposed controllers is experimentally evaluated by means of real-time hybrid testing scheme that accounts for time delays and actuator dynamics, allowing for the test of velocity-dependent devices.

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Section: Introductionmentioning

confidence: 99%

Real-time hybrid testing of semiactive control strategies for vibration reduction in a structure with MR damper

Zapateiro

Karimi

Luo

et al. 2009

Struct. Control Health Monit.

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“…Other control methods have been proposed, such as the bang-bang control (McClamroch et al, 1994;McClamroch and Gavin, 1995;Jansen and Dyke, 2000); sliding mode control (Luo et al, 2003;Moon et al, 2003;Villamizar et al, 2003); quantitative feedback theory control (Villamizar et al, 2004;Zapateiro et al, 2008); and intelligent controls such as fuzzy logic and neuro fuzzy control (Schurter and Roschke, 2001;Kim and Roschke, 2006).…”

Section: Introductionmentioning

confidence: 99%

Semiactive Backstepping Control for Vibration Reduction in a Structure with Magnetorheological Damper Subject to Seismic Motions

Zapateiro

Karimi

Luo

et al. 2009

Journal of Intelligent Material Systems and Structures

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The use of magnetorheological (MR) dampers for mitigating vibrations caused by seismic motions in civil engineering structures has attracted much interest in the scientific community because of the advantages of this class of device. It is known that MR dampers can generate high damping forces with low energy requirements and low cost of production. However, the complex dynamics that characterize MR dampers make difficult the control design for achieving the vibration reduction goals in an efficient manner. In this article, a semiactive controller based on the backstepping technique is proposed. The controller was applied to a three-story building with an MR damper at its first floor subjected to seismic motions. The performance of the controller was evaluated experimentally by means of real time hybrid testing.

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“…the nonlinear dynamics of the MR damper were ignored. A step further was done by Zapateiro, Karimi & Luo (2008) by proposing the inclusion of the MR dynamics in the QFT control design. Feasibility of this approach was proved by numerical simulations.…”

Section: Introductionmentioning

confidence: 99%

Frequency domain control based on quantitative feedback theory for vibration suppression in structures equipped with magnetorheological dampers

Zapateiro¹,

Karimi²,

Luo³

et al. 2009

Smart Mater. Struct.

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This paper addresses the problem of designing Quantitative Feedback Theory (QFT) based controllers for the vibration reduction in a structure equipped with an MR damper. In this way, the controller is designed in the frequency domain and the natural frequencies of the structure can be directly accounted for in the process. Though the QFT methodology was originally thought for linear time invariant systems, it can be extended to nonlinear systems. A new methodology is proposed for characterizing the nonlinear hysteretic behavior of the MR damper through the uncertainty template in the Nichols chart. The resulting controller is experimentally tested in real-time hybrid testing basis.

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QFT control for vibration reduction in structures equipped with MR dampers

Cited by 3 publications

References 4 publications

Real-time hybrid testing of semiactive control strategies for vibration reduction in a structure with MR damper

Real-time hybrid testing of semiactive control strategies for vibration reduction in a structure with MR damper

Semiactive Backstepping Control for Vibration Reduction in a Structure with Magnetorheological Damper Subject to Seismic Motions

Frequency domain control based on quantitative feedback theory for vibration suppression in structures equipped with magnetorheological dampers

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