Vibration control of a passenger vehicle featuring magnetorheological engine mounts

Choi, Seung Bok; Song, Hyun Jung; Lee, H.H.; Lim, Seung-Gu; Kim, J.H.; Choi, Hun-Kook

doi:10.1504/ijvd.2003.003567

Cited by 59 publications

(42 citation statements)

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“…• The lumped parameter model presented in Figure 3 is analogous to a hydraulic power model representing fluid flow, fluid compliance, and fluid inertia [23].…”

Section: Mr Damper Modelmentioning

confidence: 99%

Limit Cycle Behavior of Smart Fluid Dampers Under Closed Loop Control

Sims

2005

Journal of Vibration and Acoustics

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Semi-active vibration dampers offer an attractive compromise between the simplicity and fail-safety of passive-devices, and the weight, cost and complexity of fully active systems. In addition, the dissipative nature of semi-active dampers ensures they always remain stable under closed loop control, unlike their fully-active counterparts. However, undesirable limit cycle behaviour remains a possibility which is not always properly considered during the controller design.Smart fluids provide an elegant means to produce semi-active damping, since their resistance to flow can be directly controlled by the application of an electric or magnetic field. However, the nonlinear behaviour of smart fluid dampers makes it difficult to design effective controllers, and so a wide variety of control strategies has been proposed in the literature. In general this work has overlooked the possibility of undesirable limit cycle behaviour under closed loop conditions. The aim of the present study is to demonstrate how the experimentally observed limit cycle behaviour of smart dampers can be predicted and explained by appropriate nonlinear models. The study is based upon a previously developed feedback control strategy, but the techniques described are relevant to other forms of smart damper control.2

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“…• The lumped parameter model presented in Figure 3 is analogous to a hydraulic power model representing fluid flow, fluid compliance, and fluid inertia [23].…”

Section: Mr Damper Modelmentioning

confidence: 99%

Limit Cycle Behavior of Smart Fluid Dampers Under Closed Loop Control

Sims

2005

Journal of Vibration and Acoustics

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“…A semi-active suspension system using magnetorheological (MR) fluid can offer the desired performance in the active mode without requiring large power consumption and expensive hardware. MR fluid, the rheological properties of which can be rapidly changed by applying a magnetic field to the fluid domain, has been used in many devices such as dampers, [3][4][5][6][7][8] valves, [9][10][11][12] engine mounts 13,14 and clutch/brake 15,16 systems.…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of a quarter-vehicle MR suspension system with different tire pressure

Lee

Sung

Choi

et al. 2011

Int. J. Precis. Eng. Manuf.

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This paper evaluates performance of a quarter-vehicle magneto-rheological (MR) suspension system with respect to different tire pressure. In order to achieve this goal, controllable MR damper that satisfies design specifications for a midsized commercial passenger vehicle is designed and manufactured based on the optimized damping force levels and mechanical dimensions. After experimentally evaluating the field-dependent characteristics of the manufactured MR damper, the quarter-vehicle suspension system consisting of sprung mass, spring, tire and the MR damper is constructed in order to investigate the ride comfort. After deriving the equations of the motion for the proposed quarter-vehicle MR suspension system, vertical tire stiffness with respect to different tire pressure is experimentally identified. The skyhook controller is then implemented for the realization of quarter-vehicle MR suspension system. Ride comfort characteristics such as vertical acceleration RMS (root mean square) and WRMS (weighted RMS) of sprung mass are evaluated under bump and random road conditions using a quarter-vehicle test facility.

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“…Wang paid attention to enhancing the protection of infrastructure's elements by studying vibration control of a two-span scaled MR damper bridge model [9]. Choi et al developed a MR mount to reduce the vibration transmitting between engine and vehicle [10]. Yao et al used a MR damper to develop a semi-active control of vehicle suspension system using skyhook control strategy [11].…”

Section: Introductionmentioning

confidence: 99%

A variable stiffness MR damper for vibration suppression

Zhang

Zhou

2009

2009 IEEE/ASME International Conference on Advanced Intelligent Mechatronics

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Abstract-This paper presents the development of a magnetorheological (MR) fluid-based variable stiffness damper and analysis its applications in vibration suppression. The MR fluid isolator used a MR valve control unit and bladders to achieve the variable stiffness and damping in stepless and relative large scope. A mathematical model of the isolator was derived, a prototype of the MR fluid isolator was fabricated and its dynamic behavior was measured in vibration under various applied magnetic fields. The effective stiffness and damping coefficients of the isolator under various magnetic fields were identified and the dynamic performances of isolator were evaluated with simulation. The results demonstrated that the developed MR bladder system can efficiently suppress the structural vibrations.

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Vibration control of a passenger vehicle featuring magnetorheological engine mounts

Cited by 59 publications

References 0 publications

Limit Cycle Behavior of Smart Fluid Dampers Under Closed Loop Control

Limit Cycle Behavior of Smart Fluid Dampers Under Closed Loop Control

Performance evaluation of a quarter-vehicle MR suspension system with different tire pressure

A variable stiffness MR damper for vibration suppression

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