An Electronically Controlled Engine Mount Using Electro-Rheological Fluid

Morishita, Shin; Mitsui, Jun'ichi

doi:10.4271/922290

Cited by 29 publications

(12 citation statements)

References 15 publications

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“…Figure 4 illustrates the three design and application principles. Controllable applications of ER/MR fluids include active vibration isolation, control, dampers [91], squeeze film damping devices [92], active vehicular shock absorbers [88,93], engine mounts [94], rotary active control damper [90], and so on.…”

Section: Magneto-rheological (Mr) Fluidsmentioning

confidence: 99%

Smart Materials, Precision Sensors/Actuators, Smart Structures, and Structronic Systems

Tzou

Lee

Arnold

2004

Mechanics of Advanced Materials and Structures

177

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Many electroactive functional materials have been used in small-and microscale transducers and precision mechatronic control systems for years. It was not until the mid-1980s that scientists started integrating electroactive materials with large-scale structures as in situ sensors and/or actuators, thus introducing the concept of smart materials, smart structures, and structronic systems. This paper provides an overview of present smart materials and their sensor/actuator/structure applications. Fundamental multifield optomagnetopiezoelectric-thermoelastic behaviors and novel transducer technologies applied to complex multifield problems involving elastic, electric, temperature, magnetic, light, and other interactions are emphasized. Material histories, characteristics, material varieties, limitations, sensor/actuator/structure applications, and so forth of piezoelectrics, shape-memory materials, electro-and magnetostrictive materials, electro-and magnetorheological fluids, polyelectrolyte gels, superconductors, pyroelectrics, photostrictive materials, photoferroelectrics, magneto-optical materials, and so forth are thoroughly reviewed. INTRODUCTIONThe concepts of smart, intelligent, and adaptive materials and structures originated in the mid-1980s in an attempt to describe the newly emerging research area of integrating electroactive functional materials into large-scale structures as in situ sensors and actuators. Previously, electroactive materials had only been used in small-and microscale transducers and precision mechatronic (mechanical + electronic) control systems. The general perception of smart, intelligent, and adaptive materials or structures implies an ability to be clever, sharp, active, fashionable, and sophisticated. However, in reality, materials or structures can never achieve true intelligence or reasoning without the addition of artificial intelligence

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Section: Magneto-rheological (Mr) Fluidsmentioning

confidence: 99%

Smart Materials, Precision Sensors/Actuators, Smart Structures, and Structronic Systems

Tzou

Lee

Arnold

2004

Mechanics of Advanced Materials and Structures

177

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“…The rheological properties of both ER and MR fluids are effectively controllable by the intensity of electric or magnetic field, respectively. Many types of ER engine mounts have been proposed and their superior vibration control performances to conventional passive engine mount have been demonstrated via analytic and empirical approaches [1][2][3][4][5] . However, on the contrary to the numerous researches on the ER engine mount, the research on the MR engine mount is considerably rare.…”

Section: Introductionmentioning

confidence: 99%

<title>Vibration control of a passenger car using MR engine mounts</title>

et al. 2002

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This paper proposes a semiactive controllable magneto-rheological(MR) engine mount for vibration control of a passenger vehicle. A mixed-mode type MR engine mount is devised and incorporated with a full-vehicle model. The governing equation of the model is derived by considering engine excitation force and a semiactive skyhook controller is designed to attenuate unwanted vibrations. The controller is implemented through a hardware-in-the-loop simulation(HILS) and control responses such as acceleration at the driver's position are evaluated in time and frequency domains.

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“…Duclos [6] derives a model for a semi-active mount using ER fluids and validates simulated results with experimental data. Morishita and Mitsui [7] introduce an electronically controlled semi-active engine mount using ER fluid. By changing the viscosity of the ER fluid through applied electric field they showed that both stiffness and damping of the proposed mount can be changed.…”

Section: Introductionmentioning

confidence: 99%

Application of Sensitivity Analysis to the Development of High Performance Adaptive Hydraulic Engine Mounts

Foumani¹,

Khajepour²,

Durali³

2003

Vehicle System Dynamics

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In this paper, the sensitivity analysis is applied to the development of high performance adaptive hydraulic mounts. The analysis allows us to select the most effective design parameters for tuning an adaptive mount to different road and engine conditions. It is shown that in the low frequency road excitation, the upper chamber compliance and inertia of the fluid column in the inertia track are the most influential properties in changing the dynamic stiffness of the hydraulic mount. These properties for the high frequency engine excitations are the upper compliance and the inertia of the fluid column of the decoupler. For tuning the adaptive mount to different road and engine excitation, a global optimization technique is used to find the magnitude of the adjusting parameters to minimize objective functions in low and high frequency excitations. The results indicate significant improvement over conventional hydraulic mounts. It is further shown that when the upper compliance is used as the adjusting parameter, a simple on-off control which is triggered by the engine revolution and vehicle speed is sufficient for tuning the adaptive mount.

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An Electronically Controlled Engine Mount Using Electro-Rheological Fluid

Cited by 29 publications

References 15 publications

Smart Materials, Precision Sensors/Actuators, Smart Structures, and Structronic Systems

Smart Materials, Precision Sensors/Actuators, Smart Structures, and Structronic Systems

<title>Vibration control of a passenger car using MR engine mounts</title>

Application of Sensitivity Analysis to the Development of High Performance Adaptive Hydraulic Engine Mounts

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