Modeling and control of an electrorheological device for structural control applications

Masri, Sami F.; Kumar, Ravi; Ehrgott, Richard

doi:10.1088/0964-1726/4/1a/015

Cited by 20 publications

(8 citation statements)

References 18 publications

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“…They also conducted research on experimental characterization of an electrorheological fluid under oscillatory shear strain (Ehrgott and Masri 1994). Masri et al (1995) have also conducted a study on modeling and control of electrorheological devices in order to asses their feasibility in structural control applications. Chang and Roshke (1998) developed a neural network model to emulate the dynamic behavior of MR dampers.…”

Section: Introductionmentioning

confidence: 99%

A new dynamic hysteresis model for magnetorheological dampers

Dominguez

Sedaghati

Stiharu

2006

Smart Mater. Struct.

121

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Semi-actively controlled magnetorheological (MR) fluid dampers offer rapid variation in damping properties in a reliable fail-safe manner using very low power requirements. Their characteristics make them ideal for semi-active control in structures and vehicle applications in order to efficiently suppress vibration. To take advantage of their exceptional characteristics, a high fidelity model is required for control design and analysis. Perfect understanding of the dynamic characteristics of such dampers is necessary when implementing MR struts in applications. Different models have been proposed to simulate the hysteresis phenomenon of MR dampers. The Bouc-Wen model has been extensively used to simulate the hysteresis behavior of MR dampers. However, considerable differences still exist between the simulation and experimental results. Moreover, the characteristic parameters in the traditional Bouc-Wen model are not functions of the frequency, amplitude and current excitations; therefore, the estimated parameters can characterize the behavior of the tested MR damper under specific excitation conditions and must be re-evaluated if a different combination of excitation parameters is desired. This can be extremely cumbersome and computationally expensive. In this work, a new hysteresis model based on the Bouc-Wen model has been developed to better characterize the hysteresis phenomenon of the MR damper. The proposed model incorporates the frequency, amplitude and current excitation as variables and thus enables us to predict efficiently and accurately the hysteresis force for changing excitation conditions. The proposed modified Bouc-Wen model has been validated against the experimental results through graphical and quantitative analysis in time, displacement and velocity domains and an excellent correlation has been found.

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Section: Introductionmentioning

confidence: 99%

A new dynamic hysteresis model for magnetorheological dampers

Dominguez

Sedaghati

Stiharu

2006

Smart Mater. Struct.

121

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“…This work is interesting and yet challenging because of the nonlinearity and hysteresis that MR devices possess. Much effort has been devoted to develop comprehensive models that are able to describe the hysteretic behaviours of MR devices, including Bingham model [14], Chebyshev polynomials model [15], Bi-viscous model [16] and Bouc-Wen model [17]. In general, the most comprehensive models, such as Bouc-Wen model, are complex in form and difficult to be used in structural control applications.…”

Section: Rotational Hyperbolic Hysteresis Modelmentioning

confidence: 99%

Dynamic Performance of a Novel Magnetorheological Pin Joint

Samali

2011

JSDD

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Magnetorheological fluid (MRF) has received significant attention lately and MRF based devices have been proposed for structural control applications in recent years. The unique characteristics of MR fluid lies in its abilities to reversibly, repeatedly and instantly change from a free flowing liquid to a semi-solid state when exposed to a magnetic field. The electric power required to drive the MR devices can be easily provided by a battery. Possessing such unique properties, MR fluid based devices, such as MR damper, have become promising candidates in the semi-active control for civil structure applications. However, most of the published research has focused on application of MR dampers instead of exploring other type of MR devices. In addition, MR based devices exhibit complex nonlinear hysteresis behaviour and thus making their modelling a challenging task. In this paper, a novel MR fluid based device, namely MR pin joint, is proposed as a smart structural member in development of an intelligent civil structure that can suppress unwanted vibrations to ensure safety and serviceability of the structure. After design and fabrication, experiments have been conducted to characterise dynamic behaviours of the new device under different harmonic excitations with various input currents. Response time of the MR pin joint is compared when the MR pin joint is driven under different applied currents and moving speeds. Test data shows that the MR pin joint possesses a unique behaviour in the moment-angular velocity plot. A hyperbolic hysteresis model is proposed to model such unique behaviour. The investigation presented in the paper explores dynamic performance of MR pin joint. Finally, a parametric model is developed following the investigation on the correlation of coefficients in the proposed model with the loading conditions and applied currents.

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“…', : describe the hysteretic behaviours of MR devices, including Bingham model [11], Chebyshev polynomials model [12], Bi-viscous model [13] and Bouc-Wen model [14]. In general, the most comprehensive models, such as Bouc-Wen model, are complex in form and difficult to be used in structural control applications, Hence, trade-off has to be made between the simplicity and accuracy of the model, It is, therefore, necessary to develop a simple and yet accurate model for MR device.…”

Section: Reflectionmentioning

confidence: 99%

1A24 Dynamic Performance of A Novel Magnetorheological Pin Joint

Samali

2010

MoViC

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Modeling and control of an electrorheological device for structural control applications

Cited by 20 publications

References 18 publications

A new dynamic hysteresis model for magnetorheological dampers

A new dynamic hysteresis model for magnetorheological dampers

Dynamic Performance of a Novel Magnetorheological Pin Joint

1A24 Dynamic Performance of A Novel Magnetorheological Pin Joint

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