Design, modelling and testing of magnetorheological (MR) dampers using analytical flow solutions

Chooi, Weng W.; Oyadiji, S. Olutunde

doi:10.1016/j.compstruc.2007.02.002

Cited by 102 publications

(88 citation statements)

References 7 publications

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“…4 In the recent past, various control schemes using smart material such as electrorheological (ER) and magnetorheological (MR) fluid have been adopted for this purpose. Chooi et al 5 studied modeling of the MR damper which is a noticeable device, especially as an automotive shock absorber. Sapinski et al 6 studied an autonomous control system for a 3 DOF pitch-plane suspension model using a MR shock absorber.…”

Section: Introductionmentioning

confidence: 99%

Passive and semi-active shock reduction for prototype HSRMD avoiding human damage

Kim

2011

Int. J. Precis. Eng. Manuf.

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This paper presents the prototype shock reduction system (SRS) for the human supporting recoil mechanism device (HSRMD) subjected to impact force. Based on the parametric study of the HSRMD module, in order to reduce the force transmitted to the mounting body from the HSRMD, the passive and semi-active type shock reduction systems are studied. Parameters of the passive type SRS are determined by an optimization process under constrained conditions on the basis of the simplified HSRMD-SRS-human interaction model. The semi-active type SRS is devised using a MR damper with a feasible control scheme considering the disturbance characteristics. The performance of both systems is evaluated in a series of experiments using precisely constructed test setup. Finally, the transmitted force and linear impulse are estimated in the HSRMD-operator interaction condition for further developing process.

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Section: Introductionmentioning

confidence: 99%

Passive and semi-active shock reduction for prototype HSRMD avoiding human damage

Kim

2011

Int. J. Precis. Eng. Manuf.

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“…Bharti et al [7] examined the effectiveness of MR damper for seismic response mitigation of adjacent multistory buildings under coupled building control scheme, involving passive-off, passive-on and semi-active control strategies. Chooi and Oyadiji [8] applied analytical flow solutions to design and model MR dampers. Yang et al [9] presented a new dynamic model of the overall MR damper system which is comprised of two parts: (i) a dynamic model of the power supply, and (ii) a dynamic model of the MR damper.…”

Section: Introductionmentioning

confidence: 99%

Semi-active Control of Structure Vibrations with MR Damper Using Fuzzy Control System (FLC) and Optimization through Genetic Algorithm (GA)

El-hami

Daneshdoost

Madady

2011

Lecture Notes in Electrical Engineering

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Abstract. Magneto-Rheological (MR) damper is a new generation of dampers, filled up with a MR fluid. This fluid, when exposed to a magnetic field, will transform regularly from a slipper linear viscous fluid to a semi rigid state. In this article, semi-active control of structures equipped with MR damper is studied. For this purpose, fuzzy control theory is used to determine appropriate command voltage applied to MR damper; and genetic algorithm is used to optimize the fuzzy rules. Then, generated fuzzy rules database will improve fuzzy control system performance relative to experimental fuzzy rules database. Consequently, with applying an appropriate command voltage through an optimized fuzzy control system will decrease vibrations of the structures. The results show that, in the presence of optimized fuzzy rules through genetic algorithm, the amplitude of vibrations is decreased significantly.

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“…There are various models of MR fluids and [8][9][10][11]. A dynamic damper model proposed in this research to obtain the controllable damping force of the MR damper.…”

Section: Mr Damper Modelmentioning

confidence: 99%

Fuzzy Hybrid Control of Off-Road Vehicle Suspension Fitted With Magnetorheological Dampers

Ata

Oyadiji

2012

Volume 1: Advanced Computational Mechanics; Advanced Simulation-Based Engineering Sciences; Virtual and Augmented Reality; Appl

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The vibration caused by severe road excitation influences off-road vehicle suspension performance. The vibration control of the suspension system is a crucial factor for modern vehicles. Smart control devices (magnetorheological dampers) are proposed as a first step to handle a multiple suspension system of off-road vehicles. The magnetorheological (MR) dampers can be employed as smart dampers for vibration suppression of the suspension system; this is done by varying the produced damping force. In this paper an investigation is presented on the effectiveness of such smart dampers in attenuating the vibration of a multiple suspension system. This goal is accomplished by designing a new fuzzy hybrid controller and studying its effectiveness on the suspension performance. The multiple suspension system considered here comprises a chassis, five wheels and three MR dampers. The chassis is suspended over the five wheels through five compression springs. Three MR dampers are attached to the first, second and the fifth wheel. The stiffness of the wheels is represented by five compression springs. Only the bounce and the pitch of the chassis are considered. The assessment of the proposed model is carried out through a simulation scheme under bump and sinusoidal excitations in the time domain. The excitation of the five wheels is done independently. The simulation is accomplished using the MATLAB/SIMULINK software. The simulation results show the effectiveness and robustness of the new controller in conjunction with MR dampers in vibration suppression. Compared to the passive suspension, the body bounce, body displacement, angular acceleration and pitch angle can be well controlled NOMENCLATURE ‫ݖ‬ሷ ௪Wheel acceleration ‫ݖ‬ ሷ Body acceleration ‫ܩ‬ Groundhook gain ‫ܩ‬ ௦Skyhook gain ܸ ௫

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Design, modelling and testing of magnetorheological (MR) dampers using analytical flow solutions

Cited by 102 publications

References 7 publications

Passive and semi-active shock reduction for prototype HSRMD avoiding human damage

Passive and semi-active shock reduction for prototype HSRMD avoiding human damage

Semi-active Control of Structure Vibrations with MR Damper Using Fuzzy Control System (FLC) and Optimization through Genetic Algorithm (GA)

Fuzzy Hybrid Control of Off-Road Vehicle Suspension Fitted With Magnetorheological Dampers

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