Hierarchical fuzzy control for engine isolation via magnetorheological fluid mounts

Li, R.; Chen, W.-M.; Liao, Changrong

doi:10.1243/09544070jauto1246

Cited by 6 publications

(12 citation statements)

References 21 publications

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“…1. The vertical inertia force due to the reciprocating mass of the engine, the roll and pitch excitation moments of the engine [9] are defined as:…”

Section: Force and Torque Excitations From Ic Enginementioning

confidence: 99%

“…For a better description of the characteristics of the vehicle engine shake performance, a full vehicle model with 14 degree of freedoms (DOFs) with hydraulic engine mounts (HEMs) was established to evaluate the effect of the HEM on the engine shake performance by comparing the results obtained from the known 13 DOF model [8]. However, in most studies full vehicle dynamic models do not consider the effects of ICE vibrations on vehicle ride comfort [10][11][12][13], or if there is, they only consider the effects of ICE vibrations themselves [9]. The major goal of this study is to establish a full-vehicle vibration model with 10 degrees of freedom under two combinations from the random road surface roughness according to the International Standards Organization (ISO) 8608 [15] and ICE excitations.…”

Section: Introductionmentioning

confidence: 99%

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Influence of damping coefficient into engine rubber mounting system on vehicle ride comfort

Tan¹,

Quynh²,

Nguyen³

et al. 2019

Vib. proced.

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This study presents a method to improve vehicle ride comfort using additional damping coefficient values for an internal combustion engine (ICE) rubber mounting system. To analyze the effect of the adding damping coefficient values into the rubber mounting system on vehicle ride comfort, a full-vehicle vibration model with 10 degrees of freedom is established under the combination of road surface roughness and ICE excitations. The damping coefficient values are added into ICE rubber mounting system which are respectively analyzed and evaluated according to the international standard ISO 2631-1 (1997). The study results do not only evaluate the influence of the adding damping coefficients on vehicle ride comfort but also suggest the optimal design solution for ICE mounting system to improve vehicle ride comfort.

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“…1. The vertical inertia force due to the reciprocating mass of the engine, the roll and pitch excitation moments of the engine [9] are defined as:…”

Section: Force and Torque Excitations From Ic Enginementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of damping coefficient into engine rubber mounting system on vehicle ride comfort

Tan¹,

Quynh²,

Nguyen³

et al. 2019

Vib. proced.

View full text Add to dashboard Cite

show abstract

“…Active mounts can achieve better vibration isolation and relative displacement control performance in a broader frequency bandwidth via active force [3][4][5]. In the research of active mounting systems, the actuators and control methods that directly affect system performance have received extensive attention [6][7][8][9][10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Principle and Control of Active Engine Mount Based on Magnetostrictive Actuator

Si¹,

Bai²,

Qian³

et al. 2020

Preprint

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The engine mount system affects the automobile NVH performance. Active mounts would achieve excellent vibration isolation and relative displacement control performance in a broad frequency bandwidth by outputting controlled force to the mounting system. The actuator and control method of the active mounts determine the system performance. In this paper, an active mount based on the smart material - Terfenol-D rod is proposed, which mainly includes three parts: rubber spring, magnetostrictive actuator (MA), and hydraulic amplification mechanism. Dynamic model of the active mount is correspondingly established. A state feedback control method based on x-LMS algorithm is proposed as well. Specifically, with the consideration of the unmeasurable state parameters in the active mounting system, an x-LMS state feedback controller with the system state as the reference signal is constructed by employing Sage-Husa Kalman filter to realize the state estimation of the active mounting system. Then a detailed analysis of the proposed control method is conducted, with deriving iterative formula of tap-weight vector. Sequentially, the problem of the dependence on the excitation signal in the x-LMS algorithm is addressed. The feasibility and capability of the proposed control method are verified and evaluated by simulation of a two-degree-of-freedom active mounting system.

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“…The majority of these fluids have been utilized in either the simple flow mode [6,7] or the shear [8,9] mode of operation. An alternative arrangement-the squeeze mode-in which the fluid is subjected to compressive and tensile stresses in a direction parallel to the applied field, has been proposed for short-stroke damping applications [10,11]. It has been shown that the yield stress in this mode is greater by an order of magnitude than that available in the simple flow or shear mode [12].…”

Section: Introductionmentioning

confidence: 99%

Characteristics of magnetorheological fluids under single and mixed modes

Wahed

Balkhoyor

2016

Proceedings of the Institution of Mechanical Engineers, Part C:

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Rheological properties of magnetorheological (MR) fluids can be changed by application of external magnetic fields. These dramatic and reversible field-induced rheological changes permit the construction of many novel electromechanical devices having potential utility in the automotive, aerospace, medical and other fields. Vibration control is regarded as one of the most successful engineering applications of magnetorheological devices, most of which have exploited the variable shear, flow or squeeze characteristics of magnetorheological fluids. These fluids may have even greater potential for applications in vibration control if utilised under a mixed-mode operation. This article presents results of an experimental investigation conducted using magnetorheological fluids operated under dynamic squeeze, shear-flow and mixed modes. A special magnetorheological fluid cell comprising a cylinder, which served as a reservoir for the fluid, and a piston was designed and tested under constant input displacement using a high-strength tensile machine for various magnetic field intensities. Under vertical piston motions, the magnetorheological fluid sandwiched between the parallel circular planes of the cell was subjected to compressive and tensile stresses, whereas the fluid contained within the annular gap was subjected to shear flow stresses. The magnetic field required to energise the fluid was provided by a pair of toroidally shaped coils, located symmetrically about the centerline of the piston and cylinder. This arrangement allows individual and simultaneous control of the fluid contained in the circular and cylindrical fluid gaps; consequently, the squeeze mode, shear-flow mode or mixed-mode operation of the fluid could be activated separately. The performance of these fluids was found to depend on the strain direction. Additionally, the level of transmitted force was found to improve significantly under mixed-mode operation of the fluid.

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Hierarchical fuzzy control for engine isolation via magnetorheological fluid mounts

Cited by 6 publications

References 21 publications

Influence of damping coefficient into engine rubber mounting system on vehicle ride comfort

Influence of damping coefficient into engine rubber mounting system on vehicle ride comfort

Principle and Control of Active Engine Mount Based on Magnetostrictive Actuator

Characteristics of magnetorheological fluids under single and mixed modes

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