Idealized Hysteresis Modeling of Electrorheological and Magnetorheological Dampers

Wereley, Norman M.; Pang, Li; Kamath, Gopalakrishna M.

doi:10.1177/1045389x9800900810

Cited by 241 publications

(165 citation statements)

References 11 publications

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“…Gamato and Filisko [56] proposed a parametric viscoelastic-plastic model based on the Bingham model. Wereley et al [7] developed a nonlinear hysteretic biviscous model, which is an extension of the nonlinear biviscous model having an improved representation of the pre-yield hysteresis. However, these models can not readily capture the force roll-off in the low velocity region that is observed in the experimental data.…”

Section: Dynamic Modeling Of Mr Dampersmentioning

confidence: 99%

Large-scale MR fluid dampers: modeling and dynamic performance considerations

Yang

Spencer

Carlson

et al. 2002

Engineering Structures

658

508

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The magnetorheological (MR) damper is one of the most promising new devices for structural vibration reduction. Because of its mechanical simplicity, high dynamic range, low power requirements, large force capacity and robustness, this device has been shown to mesh well with application demands and constraints to offer an attractive means of protecting civil infrastructure systems against severe earthquake and wind loading. In this paper, an overview of the essential features and advantages of MR materials and devices is given. This is followed by the derivation of a quasi-static axisymmetric model of MR dampers, which is then compared with both a simple parallel-plate model and experimental results. While useful for device design, it is found that these models are not sufficient to describe the dynamic behavior of MR dampers. Dynamic response time is an important characteristic for determining the performance of MR dampers in practical civil engineering applications. This paper also discusses issues affecting the dynamic performance of MR dampers, and a mechanical model based on the Bouc-Wen hysteresis model is developed. Approaches and algorithms to optimize the dynamic response are investigated, and experimental verification is provided.

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Section: Dynamic Modeling Of Mr Dampersmentioning

confidence: 99%

Large-scale MR fluid dampers: modeling and dynamic performance considerations

Yang

Spencer

Carlson

et al. 2002

Engineering Structures

658

508

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“…Perhaps the most significant of these departures involves the nonNewtonian behavior of MR fluids in the absence of a magnetic field Kormann et al (1994). Moreover, it has been reported that linear stroke MR dampers can show highly nonlinear hysteretic behavior under harmonic loading conditions, that is different from that of the Bingham model Spencer et al (1997), Pang et al (1998), and Wereley et al (1998).…”

Section: Fig 3 An Elementary Hysteresis Operatormentioning

confidence: 99%

Output Torque Modeling of a Magneto-Rheological Based Actuator

Yadmellat

Kermani

2011

IFAC Proceedings Volumes

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Recent research intended to integrate robots into the anthropic domains has introduced a new set of challenges with regard to design and control of such robots. Among these challenges, human safety is perhaps one the most predominant issues. While, existing solution relies on highly specialized and high cost actuation mechanisms, a new generation of intrinsically safe robots (manipulators) that use alternative technologies is yet to prevail. There is however a general consensus that the conventional actuation mechanisms are not capable of providing intrinsic safety while maintaining the high performance of the robot. On these premisses, a new Magneto-Rheological (MR) based actuation mechanism was developed in our research group. The actuator uses a magnetic field to precisely control its output torque delivery. The actuator demonstrates remarkable mass to torque ratio and low output inertia, at the same time, its bandwidth is comparable, if not better, than current leading actuators. The output torque of the actuator however, is hysterically related to its input current which makes its control challenging. The objective of the current work is to obtain a precise open-loop model that relates the output torque to the applied input current. The advantages of the obtained model are twofold. While such a model enables accurate control of the actuator, hence the actuated mechanism; in our case a robotic arm, it also eliminates the need for a force/torque sensor for performing high fidelity force/torque control tasks. To validate the accuracy of the constructed model simulation results for the output torques are presented and compared to those measured experimentally using the prototyped actuation mechanism. Results agreements attest to the validity of the presented model.

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“…The utilization of MRFs has been increasing in the different semi-active damping control applications in the low to moderate frequency ranges, including automotive suspension 28 , civil structures [29][30][31][32] , fluid clutches 33 , optical polishing 34 and a variety of aerospace applications [35][36][37][38] , vibration isolation 39,40 , automobile valves 41 and automotive damping applications 42 . Lord Corporation, the leading supplier of commercially proven MR fluids, devices and systems, manufactures three different MR fluids namely LORD MRF-122EG, LORD MRF-132DG and LORD MRF-140CG (ref.…”

Section: Studies On Mr Fluidsmentioning

confidence: 99%

“…Different strategies for the control of semi-active MR suspensions have been published [52][53][54] . Many models were formulated to characterize the dynamic behaviour of MRFDs: The Bingham model 55 ; the bi-viscous hysteresis model 38 and the phenomenological Bouc-Wen model 50 . Among these models, the one that describes well not only the bi-viscous behaviour but also the hysteretic behaviour of MRFDs is the Bouc-Wen model (Figure 3).…”

Section: Modelling Of Mr Dampersmentioning

confidence: 99%

Developments in Vibration Control of Structures and Structural Components with Magnetorheological Fluids

Raju¹,

Varma²

2017

Current Science

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Vibration isolation and control of structures subjected to different types of dynamic loads due to periodic forces, impact and shock type forces and earthquake forces is an important area in structural engineering. The structures can be machine foundations, buildings, bridges, towers, automobiles, ship structures, military tanks and aeronautical structures. Some of these devices used are elastic springs, viscoelastic dampers, viscous fluid dampers, magnetorheological dampers and friction dampers. This article gives latest developments in vibration control of structures and structural components using magnetorheological fluids. The current status of technology and further research requirements to be studied in these areas are highlighted.Keywords: Automobile brakes, magnetorheological fluids, structure and structural components, suspension systems, vibration control.IMPROVEMENT in manufacturing technology has provided machines of higher ratings, longer bridges, taller buildings which requires to satisfy the static, dynamic capacity and serviceability and stability limits for members/ systems prescribed by codes of practice. These machines/ structures give rise to considerable higher dynamic forces and thereby higher stresses. This demands development of advanced control and safety systems to keep the structural members/systems static and dynamic responses within tolerable levels. The performance, safety and stability of structures supporting the machines/structures depend largely on their design of suspension systems and their interaction with the environment. In this article, current status of technology in development of magnetorheological and friction dampers and their use in vibration control of structural and structural components in different fields of engineering applications are presented.

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Idealized Hysteresis Modeling of Electrorheological and Magnetorheological Dampers

Cited by 241 publications

References 11 publications

Large-scale MR fluid dampers: modeling and dynamic performance considerations

Large-scale MR fluid dampers: modeling and dynamic performance considerations

Output Torque Modeling of a Magneto-Rheological Based Actuator

Developments in Vibration Control of Structures and Structural Components with Magnetorheological Fluids

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