1999 Fiscal Year Final Research Report Summary
Hanging Type Magnetic Suspention Mechanism Using Motion Control of Permanent Magnet
| Project/Area Number |
10650233
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Dynamics/Control
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| Research Institution | KOCHI UNIVERSITY OF TECHNOLOGY (1999)
The University of Tokyo (1998) |
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Principal Investigator |
OKA Koichi Kochi Univ. of Tech., Fuc. of Eng., Assistant Professor, 工学部, 助教授 (10160649)
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| Project Period (FY) |
1998 – 1999
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| Keywords | magnetic suspension / hanging type / permanet magnet / motion control / air gap control / conveyance instrument |
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| Research Abstract |
The need for a very clean environment is increasing in varous areas. Machines and tools used in such areas must be ultra-clean to avoid sample contamination during handring and processing. The conveyance vehicles used with these systems must alse generate no contamination. The mag-lev vehicle without mechanical contacts is a thoroughly solution. A type of mag-lev conveyance system with permanent magnet motion control is proposed. The principle of this levitation mechnism is that the magnetic force is controlled by the air gap length. The mag-lev vehicle system has the structure that the levitating object hangs on the upper iron rail and parts of magnets, sensors, and actuators are installed on the object. 1 DOF suspention system was made. The peizoelectric actuator is used for the air gap control. The experimental results are verify that the proposed levitation system can be contracted. 3 DOF suspention system was also made. The system can be levitated, but the robustness is very weak. The reason is that the movemnet range of the actuator is very short, so the zero adjustments of three actuators are very difficult, and the saturation of the control input often occurs. As the countermeasure, the integral feedback loop of the input voltage was made and the actuator is always set in the center position statically. But the obvious improvement can not be seen. To make the system robust, some control methods are examined. And the conveyance instruments are installed to the levitated object.
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Research Products
(10 results)
