A high-force controllable MR fluid damper–liquid spring suspension system

Raja, Pramod; Wang, Xiaojie; Gordaninejad, Faramarz

doi:10.1088/0964-1726/23/1/015021

Cited by 35 publications

(27 citation statements)

References 9 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%

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%

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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“…The equivalent viscous damping of MR damper is computed based on the dissipated energy per cycle (Raja et al, 2013). From Figure 7, the equivalent damping coefficient decreases with the increment of frequency and temperature.…”

Section: Asymmetric Dynamic Characteristics Of Temperature-dependent mentioning

confidence: 99%

Asymmetric Dynamic Model of Temperature-Dependent Magnetorheological Damper and Application for Semi-active System

Dong

Wang

et al. 2019

Front. Mater.

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As a semi-active hydraulic device, the magnetorheological (MR) damper's damping characteristics will be influenced by temperature. In addition, the MR damper with gas accumulator usually shows asymmetric loop characteristics. To capture the hysteretic characteristics of MR dampers accurately, a developed model considering the temperature effects and asymmetric characteristics is proposed and analyzed. A typical mono-tube MR damper with gas accumulator is designed and tested under different sinusoidal excitations, currents and temperatures for obtaining the temperature-dependent and asymmetric damping characteristics. Based on experimental results, the proposed asymmetric model and conventional symmetric model are compared. The accurately asymmetric model is identified to calculate coefficients of current and temperature. The MR systems with symmetric model considering temperature effects, asymmetric model independent with temperature and asymmetric model considering temperature effects are simulated and compared under an H∞ control strategy. Results show that the proposed model is the best in accuracy and can be used for semi-active control system.

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“…Sperling [8] established a dynamic landing model for the Surveyor landers with hydraulic shock absorbers and their landing stability was analyzed. Hong et al [9], Samantaray [10] and Raja et al [11] investigated the attenuation performance of the liquid spring dampers with highly compressible fluids.…”

Section: Introductionmentioning

confidence: 99%

Liquid spring damper for vertical landing Reusable Launch Vehicle under impact conditions

Yue

Titurus

Nie

et al. 2019

Mechanical Systems and Signal Processing

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This research presents the modelling, experimental validation and analysis of the liquid spring damper under impact conditions during the symmetric vertical soft landing of a Reusable Launch Vehicle. A new nonlinear lumped parameter hydraulic model of a liquid spring damper is first established including the variable liquid bulk modulus, entrapped air, flow inertial effects and cavitation phenomena. Then, a simplified nonlinear model of the scaled Reusable Launch Vehicle test prototype isproposed. This dynamic model, which consists of a three degree-of-freedom main body and a single landing leg assembly with one liquid spring damper, is studied under impact conditions. The experimental prototype with the four nominally identical landing legs is experimentally studied. First, the quasi-static spring damper tests are conducted to identify the compressibility and friction parameters.Then, the Reusable Launch Vehicle prototype drop tests are performed to identify the liquid flow parameters, to validate the damper impact response characteristics and to evaluate the full prototype model through its comparison with the experimental data. It is found that a very good match can be established between the predicted and measured quasi-static damper responses. The local damper predictions also indicate good correlation with the impact test results. The landing prototype simulations indicate qualitatively correct predictions with the main observed discrepancies attributed to the simplified and potentially excessively stiff nature of the prototype model.

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A high-force controllable MR fluid damper–liquid spring suspension system

Cited by 35 publications

References 9 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

Asymmetric Dynamic Model of Temperature-Dependent Magnetorheological Damper and Application for Semi-active System

Liquid spring damper for vertical landing Reusable Launch Vehicle under impact conditions

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