Vibration reduction of H/Shaft using an electromagnetic damper with mode change

Lee, K. H.; Bak, Jeong-Hyeon; Park, J. L.; Lee, C. H.

doi:10.1007/s12239-017-0025-5

Cited by 8 publications

(4 citation statements)

References 5 publications

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“…[6] studied the combinational effect on vibration reduction using hybrid magnet and MRF damper and proved that the vibration reduction was better than the passive elements. A dynamic damper developed by [7] with electromagnets produced better vibration reduction than dynamic damper. [8] presented a review of research work carried out by different researchers on electromagnetic damper as a vibration isolation material.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Vibration Isolation Using Electromagnetic Damping

DAKSHNAMOORTHY,

RYNTATHIANG,

SIVAKUMAR

et al. 2024

mech

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This study presents an experimental investigation focused on the reduction of vibrations using electromagnetic damping techniques. The objective is to explore the effectiveness of electromagnetic damping in mitigating undesirable vibrations and enhancing system stability. A single-degree vertically constrained spring-mass system, two pairs of electromagnets, Lab VIEW software, an accelerometer, DAQ card were used for the experimentation. SWG 17 and SWG19 coil electromagnets were used in different conditions of energization to evaluate the effectiveness of the electromagnetic damping system. The parameters such as excitation frequency, vibration amplitude, and electromagnetic damping force are systematically varied and their effects on vibration isolation are analysed. The results demonstrate that the electromagnetic damping system effectively isolates base induced vibrations across a range of frequencies and amplitudes. The experimental data reveal that at lower frequencies, upto 6Hz the amplitude of RMS acceleration was same as that of the system without energizing the electromagnet and at higher frequencies, above 10 Hz, all 2V,4V and 6V of energized electromagnets in the SDVC system showed negligible variation in the RMS amplitude of acceleration. A substantial isolation of top plate was observed at higher frequencies of base excitation.

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Section: Introductionmentioning

confidence: 99%

Experimental Study of Vibration Isolation Using Electromagnetic Damping

DAKSHNAMOORTHY,

RYNTATHIANG,

SIVAKUMAR

et al. 2024

mech

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show abstract

“…Literature [4] et al developed a damper that can reduce vibration amplitude in different frequency ranges and considered to be applied to universal joints. Mass dampers or hollow shafts can change the natural frequency by changing the total mass or stiffness.…”

Section: Introductionmentioning

confidence: 99%

Analysis of influence of eccentricity of seven-channel ball cage constant velocity universal joint on force of steel ball

Xin,

Kun

2023

Ninth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2023)

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Universal joint is a kind of torque transmission component. Based on the design and working principle of the ball-cage constant speed universal joint, the theoretical calculation formula of circumferential force and normal contact force of the ball of the seven-channel ball-cage constant speed universal joint is established. When the eccentricity of the universal joint is different, the stress of each component inside the universal joint is analyzed. Different input torques of the universal joint were set up and ADAMS multi-body dynamics model was established for simulation. The results show that there is little difference between the theoretical and simulated values of the circumferential force and the normal contact force. With the increase of eccentricity, the force on the steel ball increases, and with the decrease of eccentricity, the force on the steel ball decreases. The eccentricity of universal joint plays an important role in the design of universal joint structure.

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“…18–22 The damper using electromagnets to change the damper mode was proposed in Lee et al. 23 It is claimed in Zhong et al. 24 that the active control method greatly improved the system’s torsional vibration performance.…”

Section: Introductionmentioning

confidence: 99%

Development and control of an active torsional vibration damper for vehicle powertrains

Yüceşan

Muğan

2021

Proceedings of the Institution of Mechanical Engineers, Part K:

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Due to environmental pollution concerns, emission regulations on internal combustion engines (ICEs) have been tightening and the importance of fuel efficiency has become pronounced. Thereupon, downsizing, downspeeding, turbo supercharging, and cylinder deactivation techniques have been implemented in designing modern ICEs. Despite their considerable benefits, these methods result in boosted torsional oscillations necessitating new vibration isolation technologies due to the limited performance of passive torsional vibration dampers. In addition, trade-offs are indispensable in the passive damper system designs since different engine operating points demand different values of oscillation attenuation parameters. Thus, this study was initiated to develop a novel active torsional vibration damper (ATVD) to attenuate the torsional vibrations of all engine operating points without making any trade-off and to open up a new comfort zone for the development of modern ICEs. Proposed ATVD is essentially a parametrically excited system that adjusts the stiffness rate, damping rate, and moment of inertia in accordance with a fuzzy logic control (FLC) law to maximize engine-borne torsional vibration attenuation capability. The ATVD performance is evaluated in a co-simulation environment by using a driving cycle with six engine operating points and its advantages over conventional passive dampers are demonstrated.

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Vibration reduction of H/Shaft using an electromagnetic damper with mode change

Cited by 8 publications

References 5 publications

Experimental Study of Vibration Isolation Using Electromagnetic Damping

Experimental Study of Vibration Isolation Using Electromagnetic Damping

Analysis of influence of eccentricity of seven-channel ball cage constant velocity universal joint on force of steel ball

Development and control of an active torsional vibration damper for vehicle powertrains

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