1994 Fiscal Year Final Research Report Summary
Trial Manufacturing of Mechanical Contactless Bearingless Motors with Five-axis Active Position Control
| Project/Area Number |
05555081
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| Research Category |
Grant-in-Aid for Developmental Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
電力工学・電気機器工学
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
FUKAO Tadashi Tokyo Institute of Technology, Professor Faculty of Eng., 工学部, 教授 (10016545)
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| Co-Investigator(Kenkyū-buntansha) |
CHIBA Akira Science University of Tokyo, Lecturer Faculty of Eng.,, 理工学部, 講師 (30207287)
MICHIOKA Chikara Tokyo Institute of Technology, Research Associate Faculty of Eng.,, 工学部, 助手 (40262282)
PENG Fang-zheng University of Tennessee, Assistant Professor, 助教授 (50242285)
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| Project Period (FY) |
1993 – 1994
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| Keywords | bearingless motor / magnetic bearing / five-axis contorl / reluctance motor / cage rotor induction motor / permanent magnet synchronous motor / super high speed motor / decoupling control |
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| Research Abstract |
The head investigator and investigators have proposed a new high speed rotating machine which has no mechanical bearings. The fundamental characteristics such as the relationships between the radial force and the machine parameters, changes in the mutual inductances by the deviation of the rotor position were investigated theoretically and experimentally by using the test machine whose bottom shaft end was supported by a mechanical bearing. Then the machine resembles the movements of tops with a fixed bottom end.
The purpose of this research is to manufacture mechanical contactless bearingless motors with five-axis position control by way of trail and to obtain basic design conditions for practical bearingless machine systems.
The final achievements are summarized as follows :
1.Two types of the mechanical contactless bearingless motors with five-axis position control, i.e.a synchronous reluctance type and an induction type, are developed.
2.For the synchronous reluctance type, the fact that the interference of the torque components in the rotor position control system causes the instability in the rotor position control was pointed out and a decoupling control method has proposed. The developed system was successfully operated under the following condition ; rotating speed 5,000rpm, output power 300W and radial. force6.4kgf.
3For the induction motor type, the developed system with a newly proposed compensator was successfully operated at the speed of 11,000rpm under no load condition.
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