Vibration Isolation by a Variable Stiffness and Damping System

Liu, Yanqing; Matsuhisa, Hiroshi; Utsuno, Hideo; Park, Jeong Gyu

doi:10.1299/jsmec.48.305

Cited by 36 publications

(26 citation statements)

References 8 publications

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“…Two excitation signals were used to evaluate the whole system: bump road profile and random road profile. These two excitations are generated by the equation (21) and equation (22), which are classic road profile generation method [31][32]. The expression for the bump excitation is:…”

Section: Effectiveness Evaluation and Analysis Of The Damper On A mentioning

confidence: 99%

“…TII-18-3113 2 Based on these motivations, the concept of variable stiffness has been integrated into damping variable suspension system to form a variable stiffness and damping suspension and this topic has been attracting increasing attentions recently [11][12][13][14][15][16]. Zhang et al [17,18] [22]. In their design, the damping and the stiffness cannot be controlled independently because that the two MR dampers were installed in series.…”

Section: Introductionmentioning

confidence: 99%

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A New Generation of Magnetorheological Vehicle Suspension System With Tunable Stiffness and Damping Characteristics

Sun

Tang

Yang

et al. 2019

IEEE Trans. Ind. Inf.

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As the concept of variable stiffness (VS) and variable damping (VD) has increasingly drawn attention because of its superiority on reducing unwanted vibrations, dampers with property of varying stiffness and damping have been an attractive method to further improve vehicle performance and driver comfort. This paper presents the design, prototyping, modeling, and experimental evaluation of a VS and VD magnetorheological (MR) vehicle suspension system. It was first characterized by an INSTRON machine. Then, a phenomenological model was proposed to capture the characteristics of the damper and TS fuzzy approach was used to model the quarter car system where the proposed damper was installed. Different controllers, including skyhook, short-time Fourier transform and state observer based controller were designed to control the damper. Experimental results demonstrate that the quarter car system with the VS and VD suspension performs best in terms of reducing the sprung mass accelerations comparing with other suspensions. Abstract-As the concept of variable stiffness and damping has drawn increasingly attention because of its superiority on reducing unwanted vibrations, dampers with property of varying stiffness and damping have been an attractive method to further improve vehicle performance and driver comfort. This paper presents the design, prototyping, modelling and experimental evaluation of a variable stiffness and variable damping (VSVD) magnetorheological (MR) vehicle suspension system. It was firstlycharacterized by an INSTRON machine. Then a phenomenological model was proposed to capture the characteristics of the damper and TS fuzzy approach was used to model the quarter car system where the proposed damper was installed. Different controllers, including skyhook, Short-time Fourier transform (STFT) and state observer based controller were designed to control the damper. Experimental results demonstrate that the quarter car system with the variable stiffness and damping suspension performs best in terms of reducing the sprung mass accelerations comparing with other suspensions. Index Terms-variable stiffness and damping; magnetorheological; vehicle suspension; vibration control Shuaishuai Sun received the B.E. degree in mechanical engineering and automation from the

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Section: Effectiveness Evaluation and Analysis Of The Damper On A mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A New Generation of Magnetorheological Vehicle Suspension System With Tunable Stiffness and Damping Characteristics

Sun

Tang

Yang

et al. 2019

IEEE Trans. Ind. Inf.

View full text Add to dashboard Cite

show abstract

“…However, the size limitation of this structure makes it unsuitable in real application [30]. In order to overcome these drawbacks, our group designed a compact shock absorber with variable stiffness and damping features [31,32].…”

Section: Introductionmentioning

confidence: 99%

Development of a variable stiffness magnetorheological damper with self-powered generation capability

Zhu

Deng

Sun

et al. 2019

Journal of Intelligent Material Systems and Structures

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This article reports a compact stiffness controllable magnetorheological damper with a self-powered capacity. First, the structure, working mechanism, and analysis of the damper are presented. After the prototype of the magnetorheological damper, experimental tests were conducted to evaluate its variable stiffness feature and self-powered generation capability using a hydraulic Instron test system. The testing results demonstrate that its stiffness variation range can reach 70.4% when the applied current increases from 0 to 2 A. The energy generating capability of the magnetorheological damper was also evaluated using the Instron testing system under a harmonic excitation with 0.15 Hz frequency and 30 mm displacement. The testing results illustrate that the self-powered generation component can generate 2.595 W effective power, which is enough to control the magnetorheological component of the damper. The successful development, theoretical analysis, and experimental testing of this new variable stiffness self-powered magnetorheological damper make the concept of energy-free variable stiffness magnetorheological damper feasible. AbstractThis paper reports a compact stiffness controllable magnetorheological (MR) damper with a self-powering capacity. Firstly, the structure, working mechanism and analysis of the damper are presented. After the prototype of the MR damper, experimental tests were conducted to evaluate its stiffness variable feature and self-powered generation capability using a hydraulic Instron test system.The testing results demonstrate that its stiffness variation range can reach 70.4% when the applied current increases from 0A to 2A.The energy generating capability of the MR damper was also evaluated using the Instron testing system under a harmonic excitation with 0.15Hz frequency and 30mm displacement. The testing results illustrate that the self-powered generation component can generate 2.595 W effective power, which is enough to control the MR component of the damper. The successful development, theoretical analysis and experimental testing of this new variable stiffness self-powered MR damper make the concept of energy free stiffness variable MR damper feasible.

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“…It is easy to achieve the variable damping with an MR damper in vibration systems. The authors of this paper proposed a new structure and control algorithms using two controllable dampers in series to realize the variable damping and stiffness in vibration control system (6) . In this paper, the time and frequency responses of the system with two MR dampers to the sinusoidal, sweep and random inputs were investigated in experiments and calculations.…”

Section: Introductionmentioning

confidence: 99%

Vibration Control by a Variable Damping and Stiffness System with Magnetorheological Dampers

Liu

Matsuhisa

Utsuno

et al. 2006

JSME Int. J., Ser. C

Self Cite

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A vibration isolation system with variable damping and stiffness control is practical and has good performances. However, conventional devices of variable stiffness are usually complicated. A magnetorheological (MR) fluid damper only needs a small electric current to provide the magnetic field. It is easy to achieve variable damping with an MR damper in vibration systems. In this paper, two MR fluid dampers in series were used to achieve the variable damping and stiffness for the system. The passive, variable damping, variable stiffness, and variable damping and stiffness systems were investigated in experiment and theoretical calculation. The time and frequency responses to sinusoidal, sweep and random inputs showed that the system with a variable damping and stiffness had better properties.

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Vibration Isolation by a Variable Stiffness and Damping System

Cited by 36 publications

References 8 publications

A New Generation of Magnetorheological Vehicle Suspension System With Tunable Stiffness and Damping Characteristics

A New Generation of Magnetorheological Vehicle Suspension System With Tunable Stiffness and Damping Characteristics

Development of a variable stiffness magnetorheological damper with self-powered generation capability

Vibration Control by a Variable Damping and Stiffness System with Magnetorheological Dampers

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