D311 Performance evaluation of product type magnetic damper for light-weight mechanical structure using Eddy-current damping effect

2011 ◽  
Vol 2011.12 (0) ◽  
pp. 669-672
Author(s):  
Osamu FURUYA ◽  
Keiji OGATA
Keyword(s):  
Performance Evaluation ◽  
Eddy Current ◽  
Product Type ◽  
Light Weight ◽  
Mechanical Structure ◽  
Damping Effect ◽  
Eddy Current Damping

420 Study on damping device for light weight mechanical structure using damping effect caused by Eddy current

2008 ◽  
Vol 2008 (0) ◽  
pp. _420-1_-_420-4_
Author(s):  
Osamu FURUYA ◽  
Fumiaki MARUYAMA ◽  
Keiji OGATA ◽  
Toyohiko TANAKA ◽  
Hiroshi KURABAYASHI
Keyword(s):  
Eddy Current ◽  
Light Weight ◽  
Mechanical Structure ◽  
Damping Effect

Research and Development of Damping Device for Light Weight Mechanical Structure Using Damping Effect Caused by Eddy Current

2009 ◽  
Author(s):  
Osamu Furuya ◽  
Keiji Ogata ◽  
Toyohiko Tanaka ◽  
Hiroshi Kurabayashi
Keyword(s):  
Eddy Current ◽  
Base Isolation ◽  
Low Cost ◽  
Control Technique ◽  
Small Scale ◽  
Light Weight ◽  
Isolation System ◽  
Seismic Safety ◽  
Damping Effect ◽  
Kobe Earthquake

A base-isolation and vibration control technique has been applied positively to architectural and civil structures after Kobe earthquake, and now the techniques are adopted as general vibration reduction technique for many structures. In such situation, an application of the vibration attenuation device to the small-scale structure has been carried out actively in recent years. Especially, in the important institution of the cities such as a refuge place, a hospital, a school, an information and a communication institution where function maintenance is needed, it is important to maintain its performance of the machinery and equipment in the facility with an upgrade of structural seismic safety. Moreover, in the future, upgrading of seismic safety of the particular equipments is urgent business. This study has been examined a low cost and compact damping device for base-isolation system of light weight mechanical structures like a computer server rack. In this paper, the experimental and analytical results on the basic performances of the damping device using damping effect by Eddy-Current.

Design and modeling of a magnetic shock absorber based on eddy current damping effect

2008 ◽  
Vol 315 (4-5) ◽  
pp. 875-889 ◽  
Author(s):  
Babak Ebrahimi ◽  
Mir Behrad Khamesee ◽  
M. Farid Golnaraghi
Keyword(s):  
Eddy Current ◽  
Shock Absorber ◽  
Damping Effect ◽  
Eddy Current Damping

Performance Evaluation of Product Type Magnetic Damper Using Eddy-Current Damping Effect

2011 ◽  
Author(s):  
Osamu Furuya ◽  
Keiji Ogata
Keyword(s):  
Eddy Current ◽  
Base Isolation ◽  
Low Cost ◽  
Vibration Reduction ◽  
Product Type ◽  
Small Scale ◽  
Isolation System ◽  
Seismic Safety ◽  
Damping Effect ◽  
Kobe Earthquake

Response control techniques such as a base-isolation and a vibration control have been a general vibration reduction system for upgrading of seismic safety or habitability improvement in civil and architectural structure after Kobe earthquake. In such state in Japan, an application of the vibration reduction device to a small-scale structure has been carried out actively in recent years. Especially, in the important institution of the cities such as refuge place, hospital, school, information and communication institution where function maintenance is needed, it is important to maintain its performance of the machinery and equipment in the facility with an upgrade of structural seismic safety. Moreover, in the future, upgrading of seismic safety of the particular equipments is urgent business. This study has been examined a compact and low cost damping device for a base-isolation system of light weight mechanical structures like a computer server rack. In this paper, experimental and analytical results on the performances of the product type damping device using damping effect caused by Eddy-Current are described.

scholarly journals Design and experiment of noncontact eddy current damping module in air bearing–guided linear motion system

2019 ◽  
Vol 11 (8) ◽  
pp. 168781401987142 ◽  
Author(s):  
Eunho Sung ◽  
Chang-hoon Seo ◽  
Hyunmin Song ◽  
Byungjoo Choi ◽  
Yongho Jeon ◽  
...  
Keyword(s):  
Eddy Current ◽  
Permanent Magnets ◽  
Industrial Applications ◽  
Step Response ◽  
Air Bearing ◽  
Linear Motion ◽  
Damping Effect ◽  
Motion System ◽  
Halbach Array ◽  
Eddy Current Damping

As a method for reducing the friction of high-precision system, air bearings have been widely used for various industrial applications. However, their small damping leads to poor in-position stability and therefore systems are susceptible to residual vibration and disturbance. In this study, a linear motion stage which is guided by air bearing for a noncontact eddy current damping module is proposed. The eddy current damping module consists of a Halbach array of permanent magnets and a fixed conductor plate. An eddy current is generated in the conductor in the direction opposing the change in the magnetic field when the magnets move, after which the resistivity in the conductor dissipates the kinetic energy of the moving part; therefore, the module has a damping effect without contact and system is shown good in-position stability. In order to specify the damping effect, the motion of the moving part was experimentally analyzed. The step response confirmed that the eddy current damping module can improve the performance of the positioning system: the settling time decreased by 36.8% and the resolution improved by 59.4%. These improvements verify that eddy current damping is a suitable method for application in precision industries.

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