Semi-active Control for Eccentric Structures with MR Damper by Hybrid Intelligent Algorithm

Li, Hong‐Nan; Chang, Zhiguo; Li, Jun

doi:10.1007/11538356_15

Cited by 4 publications

(6 citation statements)

References 4 publications

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“…The parameters in the model, f y , C b , ẋh and k, can be identified as a function of the control current I and the maximum velocity ẋm , using a constrained least mean square error minimization procedure [8]:…”

Section: Modeling Of Mr Dampermentioning

confidence: 99%

“…In order to effectively suppress the torsional seismic response and solve the problem of amplification of local acceleration for the 'switch' control strategies, a multi-state control strategy of the MR damper is developed herein, which uses the velocity response as the state-switch parameter [8]:…”

Section: Semi-active Control Strategymentioning

confidence: 99%

“…A promising approach to minimize the detrimental effects of torsional seismic responses is to implement control systems, such as viscoelastic dampers [3,4], frictional dampers [5], circular tuned liquid column dampers [6], and tuned mass dampers [7]. Among them, the magnetorheological (MR) damper is a kind of intelligent and effective semi-active control device for its attractive characteristics in applications of civil engineering [8], including high strength, insensitivity to contamination, and small power requirement, and can be viewed as fail-safe in that it becomes a passive damper in the case of control hardware malfunction. Our aim in this paper is to test the feasibility of the torsional seismic response control of asymmetric structures with MR dampers.…”

Section: Introductionmentioning

confidence: 99%

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Experiment and analysis of torsional seismic responses for asymmetric structures with semi-active control by MR dampers

2009

Smart Mater. Struct.

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This paper focuses on the mitigation of the coupled translation and torsion responses of an asymmetric structure by a magnetorheological (MR) damper. A double-sigmoid model of the MR damper is presented on the basis of the experimental results, and the validity of this proposed model for predicting the hysteretic behavior of the MR damper is favorably proved by comparing the simulation results with the experimental data. A multi-state control strategy (MSC) which uses the velocity response as the state-switch parameter is developed for the torsional seismic response control of the asymmetric structure. The parameters of this control strategy are optimized by a genetic algorithm (GA) method. Finally, a shaking table test is carried out to evaluate the effectiveness of MR dampers for the torsional seismic response control of a three-story reinforced concrete frame-shear wall eccentric structure. The results indicate that the MR damper is quite effective for the coupled translation and torsion response reduction. The proposed semi-active control strategy has advantages over the performance of passive systems for different ground motion inputs and various excitation levels. Moreover, the location of MR dampers has a significant effect on the response control.

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Section: Modeling Of Mr Dampermentioning

confidence: 99%

Section: Semi-active Control Strategymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experiment and analysis of torsional seismic responses for asymmetric structures with semi-active control by MR dampers

2009

Smart Mater. Struct.

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“…e main operation of the MR damper in semiactive control is the determination of the command current according to an appropriate control algorithm [1][2][3]. Most applications and experimental studies in this context have been completed through various ON-OFF control algorithms [4].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Inverse Model-Based Force Tracking Control of MR Damper

Wei

Wang

2020

Shock and Vibration

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An explicit inverse model of a magnetorheological (MR) damper is established to track the desired force in real time through experimental analysis and mathematical modeling. An algebraic hyperbolic tangent model is used to present the nonlinear behavior of MR dampers to avoid dynamic evolution due to effortless invertibility. A characteristic method is utilized to obtain the initial parameters of this algebraic hyperbolic tangent model; subsequently, the main parameters of the algebraic model are selected as quadratic functions of the applied current such that the closed-form expressions of the inverse model can be obtained. Then, the response time including communication and electromagnetic interactions in the experiment is investigated and modeled. By combining the force-current and electromagnetic models, an inverse model-based force tracking scheme is proposed. A series of validated tests are performed to study the force tracking performance. The proposed model exhibits high fidelity for tracking variable desired forces in experiments. Further analysis on force tracking errors demonstrates the mitigation of errors in various current fluctuating methods.

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“…With the development of technology, the traditional structure itself by enhancing the damping ratio to resist the wind-induced vibration have been used in actual projects, but this passive control does not have the ability to self-regulation, often causing significant economic losses and casualties [1] . With the United States made "intelligent" concept, that "imitation of life functions will have a material integration in basic materials, so that components made with intelligent features that people expect to make the structure self-diagnosis, adaptive, Self-healing capacity, proposed the concept of intelligent enhanced performance of civil engineering structure monitoring, forecasting ability, more important is that it can achieve the objective of economic efficiency.…”

Section: Introductionmentioning

confidence: 99%

Semi-Active Control for Vibration of Transmission Tower-Line with MRD

Kong

Tao

Men

2014

AMM

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Magneto-rheological (MR) damper is a semi-active control device, which takes advantage of both the reliability of passive devices and the adaptability of fully active control devices and is widely used on many kinds of machines and civil works. But there are some particular problems when the MRD is used on transmission tower-line system.This article is aimed to introduce the technological means to these problems such as :choose sant colony algorithm as the suitable semi-active control algorithm; consider adopting Self-Powered/Self-Sensing structure to Increased general OS stability;

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Semi-active Control for Eccentric Structures with MR Damper by Hybrid Intelligent Algorithm

Cited by 4 publications

References 4 publications

Experiment and analysis of torsional seismic responses for asymmetric structures with semi-active control by MR dampers

Experiment and analysis of torsional seismic responses for asymmetric structures with semi-active control by MR dampers

Experimental Study on Inverse Model-Based Force Tracking Control of MR Damper

Semi-Active Control for Vibration of Transmission Tower-Line with MRD

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