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Showing 1 to 20 of 22 for “"mr damper"”.
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Comparison of Linear, Nonlinear, Hysteretic, and Probabilistic MR Damper Models
Magnetorheolgical (MR) fluid dampers have the capability of changing their effective damping force depending on the current input to the damper. A number of factors in the construction of the damper, as well as the properties of the fluid and the electromagnet, create a dynamic response of the …
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An Invertible Open-Loop Nonlinear Dynamic Temperature Dependent MR Damper Model
A Magnetorheological damper is a commonly used component in semi-active suspensions that achieves a high force capacity and better performance than a passive system, without the added expense and power draw of a fully active system, all while maintaining failsafe performance. To fully exploit the …
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Input identification, footbridge control and non-linear identification of a MR damper
… and the use of a semi-active tuned mass damper. In this respect, the work appears threefold since the first and third part regard identification of a realistic model for the damping device and semi-active control of the magneto-rheological damper. In this respect, input identification …
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Theoretical and experimental study on cable vibration reduction with a TMD-MR damper
… to using the existing Magnetorheological (MR) damper, the current study proposes a new type of damper, called the Tuned Mass Damper-Magnetorheological (TMD-MR) damper. Theoretical and experimental investigations for the damper performance on the cable vibration reduction are conducted, …
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Semi-active control for independently rotating wheelset in railway vehicles with MR dampers
… details of an investigation of a controller for MR damper in the implementation of semi-active control, for primary suspensions of the independently rotating railway vehicles. This research focuses on using MR damper and it addresses on three main aspects when designing semi-active control …
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Heating effects on magnetorheological dampers
… used such as viscous, friction or tuned mass dampers; however, one of the most recent promising systems proposed is the Magnetorheological damper (MR damper). Because of their ability to be controlled and to adapt their mechanical properties by varying a magnetic field, their high damping …
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Innovative Designs for Magneto-Rheological Dampers
Magnetorheological dampers, or as they are more commonly called, MR dampers, are being developed for a wide variety of applications where controllable damping is desired. These applications include dampers for automobiles, heavy trucks, bicycles, prosthetic limbs, gun recoil systems, and possibly …
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Experimental Evaluation of Semiactive Magneto-Rheological Suspensions for Passenger Vehicles
… suspension incorporating a magneto-rheological (MR) damper. A full-scale two-degree-of-freedom (2DOF) quarter-car test apparatus has been constructed at the Advanced Vehicle Dynamics Lab at Virginia Tech to evaluate the response of a vehicle suspension under the different control schemes of …
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Finite Element Analysis Based Modeling of Magneto Rheological Dampers
… built to analyze and examine a 2-D axisymmetric MR damper. This model has been validated with the experimental data. The results obtained in this thesis will help designers to create more efficient and reliable MR dampers. We can create some design analysis to change the shape of the piston in …
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Structural control optimisation and health monitoring using newly developed techniques
… to identify the forward and inverse models of a MR damper. Numerical and Experimental results show that the developed evolving TSK fuzzy model can identify and grasp the nonlinear dynamics of both forward and inverse systems very well, while a small number of inputs and fuzzy rules are required …
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Distributed real-time hybrid simulation: Modeling, development and experimental validation
… using a three story structure equipped with an MR damper. The structure is tested on the shake table and its global responses are compared to RTHS and dRTHS configurations where the physical MR damper and numerical structural model are tested in local and geographically distributed …
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Study of a Modified Friction Device for the control of civil structures
… the MFD can display a behavior similar to the MR damper but with a more mechanically robust and reliable system. Thirdly, several control schemes have been implemented and the MFD can be used as a force actuator as well as a passive device. Furthermore, this device meets realistic constraints …
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Behavior of Magneto-Rheological Fluids Subject to Impact and Shock Loading
… the design of controllable magnetorheological (MR) fluid devices have focused heavily on low velocity and low frequency applications. The extensive work in this area has led to a good understanding of MR fluid properties at low velocities and frequencies. However, the issues concerning MR fluid …
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Application of Magnetorheological Dampers for Vehicle Seat Suspensions
… seat suspensions that employ magnetorheological (MR) dampers and skyhook control. An Isringhausen seat suspension that had been modified to replace the stock passive damper with a controllable MR damper was used to evaluate the problems and potential solutions. A seat suspension tester was built …
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A Fail-safe, Bi-Linear Liquid Spring, Controllable Magnetorheological Fluid Damper for a Three-dimensional Earthquake Isolation System
… liquid spring, controllable magnetorheological (MR) damper is designed, built and tested. The device combines the controllable MR damping in addition to the fail-safe viscous damping and liquid spring features on a single unit serving as the vertical component of the building suspension system …
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Seismic Performance of Rail-Counterweight System of Elevator in Buildings
… of the system using additional discrete viscous dampers. However, there is not much space available for installing the devices, and placement parallel to the spring at the roller guide assemblies is not quite effective due to contact between the restraining plate at the roller guide assemblies …
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Modeling and control of smart structures embedded with magnetorheological devices
… to the problem, such as the magnetorheological (MR) damper (MRD), pin joint (MRP), and elastomer base isolator (MRE). This study first aims at exploring the solutions to the present problem in system modeling and controller design of MR based systems to effectively damp out unwanted vibrations as …
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MR dampers in smart structures with nonlinear non-affine dynamics improvising intelligent control
… devices. For example, semi-active controlled dampers, from the dissipation point of view by using suitable control schemes for parameterized relationships describing the system dynamics of the structure integrated with the smart devices with respect to the applied electrical signal. This …
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Structural control strategies for earthquake response reduction of buildings
… strategies, especially with magnetorheological (MR) dampers, for building protection from severe earthquakes. To make semi-active control strategies more practical, further studies on both the numerical and experimental aspects of the problem are conducted. In the numerical studies, new …
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Nonlinear Mr Model Inversion for Semi-Active Control Enhancement With Open-Loop Force Compensation
… effective commercially available controllable damper technology such as Magneto-Rheological (MR) devices. Unfortunately, MR dampers exhibit highly nonlinear behavior, thus presenting an often over-looked complexity to the control system designer. With regards to controlling dampers, the …
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