Noncontact Manipulation of Objects Using Magnets
| Project/Area Number |
05452171
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Intelligent mechanics/Mechanical systems
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| Research Institution | MIE UNIVERTSITY |
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Principal Investigator |
NAKAMURA Tatsuya Mie Univ, faculry of eng, professor, 工学部, 教授 (10242926)
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| Project Period (FY) |
1993 – 1994
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| Project Status |
Completed (Fiscal Year 1994)
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| Budget Amount *help |
¥6,400,000 (Direct Cost: ¥6,400,000)
Fiscal Year 1994: ¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 1993: ¥3,200,000 (Direct Cost: ¥3,200,000)
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| Keywords | magnetic actuator / magnetic levitation / noncontact manipulation / micromachine / manipulation / robot |
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| Research Abstract |
Noncontact manipulation technologies are important especially in micromachine applications because of their small working spaces. This research aims at development of mechanism, control andmeasurement for magnetically levitated movement of small objects in a larger space compared with an object size
First, we propose a new magnetic mechanism for levitated movement of a small magnet in a 2 dimensional vertical space. This mechanism consists of two electromagnets, a permanent magnet for gravity compensation and a yoke. A common polepiece connecting two electromagnets is essential for producing strong vertical forces in a wide range. Horizontal and vertical positions of the small magnet are determined by the ratio and the sum of the two electromagnet currents, respectively. A prototype is constructed and used to verify the effectiveness of the mechanism expermentally.
Second, the above principle is extended to a 3 dimensional case. A prototype, which consists of four electromagnets, a perma
… More
nent magnet for gravity compensation and a yoke, is constructed. Several types of polepiece are tested experimentally and its design conditions are investigated.
Third, a mechanism for levitated movement of a nonmagnetic metal is considered. It is known that an alternating magnetic field produces a repulsive force to nonmagnetic metals. The possibility of the use of this method is tested by constructing a testbed and its design conditions are investigated.
Finally, the use of ultrasonic sensors for measurement in magnetic levitation is investigated, while laser sensors are used in the experiments above. Ultrasonic sensors are cost effective and useful for measurement in complicated environments such as inside human bodies. However, they have never been used in magnetic levitation because of their low resolution. It is show nexperimentally that magnetic levitation with ultrasonic sensors is made possible by Kalman filters.
In conclusion, basic technologies for magnetically levitated movement of small objects are established. The result of this research will be extended to micromachines with several machine parts. Less
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Report
(3 results)
Research Products
(12 results)
