ᚑくᄢቇℂᎿቇ⎇ⓥႎ๔
J. Fac. Sci. Tech., Seikei Univ.
Vol.45 No.㧝 (2008) pp.1-4࡜ࡃ࡯⏛⍹⵾౞ᒻ゠㆏਄ߩ㜞᷷⿥㔚ዉࡃ࡞ࠢ૕ߩ◲ᤃᶋ਄㨯ផㅴⵝ⟎ߩ⹜૞⍹ㇹጟ ⁴ ੑࡁች ᤩ ਛጊ ବ੺ 

Manufacture of Simple Levitation and Propulsion System of HTS Bulk
on Circular Track Made by Rubber Magnets
Takeshi ISHIGOHKA*1, Akira NINOMIYA*2, Shunsuke NAKAYAMA*3
ABSTRACT㧦The authors have studied an simple and easy-to-make superconducting magnetic levitationand propulsion system. It is composed of bulk HTS (High Temperature Superconductor) and circulartrack made by rubber magnets. The HTS bulk is put in a light weight container made of styroform.
Rubber magnets are commercially available low price ones. The levitator is propelled
electromagnetically by on-ground coils fed by charged capacitor. The system would be one of the most
simple and low-cost systems as a first-step demonstration model of superconducting magnetic levitation
systems.
Index Terms㧦superconducting magnetic levitation, electromagnetic propulsion, low-cost demonstration
model system.
(Received March 25, 2008)㧝㧚ߪߓ߼ߦṁⲢᴺ QMG ᴺߢ૞ࠄࠇߡ޿ࠆ‫ߩߘޕ‬ᒻ⁁ࠍ࿑ 1 ߦ␜ߔ‫ޕ‬㜞᷷⿥㔚ዉ૕ߩ⊒⷗એ᧪㧘ࡃ࡞ࠢ㜞᷷⿥㔚ዉ૕ߣ᳗ਭ⏛⍹ߣߩ㑆ߩࡇࡦ࠾ࡦࠣജࠍ೑↪ߒߡ㧘ߎࠇࠍ⏛᳇ᶋ਄ࠪࠬ࠹ࡓߦᔕ↪ߒࠃ߁ߣߔࠆ⹜ߺ߇ߥߐࠇߡ߈ߚ‫ߩߘޕ‬ᄙߊߪ㧘ᱷ⇐⏛᧤ኒᐲߩ㜞޿ࡀࠝࠫࡓ⏛⍹╬ߩᏗ࿯㘃᳗ਭ⏛⍹ࠍ࿾਄゠㆏ߦ↪޿ߚ߽ߩߢ޽ࠅ㧘⵾૞ࠦࠬ࠻߇㜞ߊߥࠆߣ⸒߁໧㗴߇޽ࠆ‫੹ޕ‬࿁㧘⪺⠪╬ߪ㧘቟ଔߥ࡜ࡃ࡯⏛⍹ࠍ࿾਄゠㆏஥ߦ↪޿㧘㑆ᰳ⊛ߦ⸳⟎ߐࠇߚ࿾਄࿕ቯࠦࠗ࡞ߦࠃࠅផㅴߐࠇࠆᣇᑼߩ◲ᤃ⏛᳇ᶋ਄ࠪࠬ࠹ࡓࠍ⹜૞ߒߚ‫ޕ‬࿾਄゠㆏ߪ౞ᒻߢ㧘ߘߩ਄ߦ㜞᷷⿥㔚ዉߩ ૐ᷷଻ᜬኈེ⭯᧼ࠍ෼⚊ߒߚシ㊂ߩ⊒ᵃࠬ࠴ࡠ࡯࡞⵾ߩᶧ૕⓸⚛ኈེ ਄ㅀߩ㜞᷷⿥㔚ዉ૕ࠍૐ᷷ߦ଻ᜬߔࠆߚ߼㧘ᶧ૕⓸⚛

ࠍᶋ਄࡮ផㅴߐߖߚ‫ޕ‬߇ḩߚߐࠇߚ⊒ᵃࠬ࠴ࡠ࡯࡞⵾ߩૐ᷷଻ᜬኈེࠍ↪޿ߚ‫ޕ‬⊒ᵃࠬ࠴ࡠ࡯࡞᧼ߩෘߐߪ 10mm ߢ޽ࠆ‫ߩߎޕ‬ኈེߩᐩ㧞㧚ታ㛎ⵝ⟎ㇱߦ⭯᧼⁁ߩ㜞᷷⿥㔚ዉࡃ࡞ࠢ૕ࠍ⸳⟎ߒߚ‫ߩߘޕ‬᭎ⷰ࿑  ⭯᧼⁁ࡃ࡞ࠢ㜞᷷⿥㔚ዉ૕ࠍ࿑㧞ߦ␜ߔ‫ޕ‬ 㜞᷷⿥㔚ዉࡃ࡞ࠢ૕ ᧄታ㛎ߢߪシ㊂ൻߦ⇐ᗧߒ㧘ᶋ਄ߐߖࠆ㜞᷷⿥㔚ዉࡃ࡞ࠢ૕ߦߪ 30302mm ߩ⭯᧼⁁ Y ♽㉄ൻ‛㜞᷷⿥㔚ዉࡃ࡞ࠢ૕ࠍ↪޿ߚ‫ޕ‬ᚑಽᲧߪ Y㧦Ba㧦Cu㧩1㧦2㧦3 ߢ㧘㧦㔚᳇㔚ሶᎿቇኾ᡹ᢎ᝼(ishigoka@st.seikei.ac.jp)
㧦㔚᳇㔚ሶᎿቇኾ᡹ഥᢎ(ninomiya@st.seikei.ac.jp)
㧦㔚᳇㔚ሶᎿቇ⑼ත⎇↢ ⃻࿷㑐᧲㔚᳇଻቟දળൕോ)

 ࡜ࡃ࡯⏛⍹⵾౞ᒻ゠㆏ ೨ㅀߩ᭽ߦ㧘࿾਄ߩ᳗ਭ⏛⍹゠㆏ߦߪࡈࠚ࡜ࠗ࠻♽ߩ࡜ࡃ࡯⏛⍹ࠍ↪޿ߚ‫⏛࡯ࡃ࡜ޕ‬⍹ߩᢿ㕙ᒻ⁁ߪ㧘15
5mm ߢᨵエᕈ߇޽ࠅ౞ᒻ゠㆏ࠍ᭴ᚑߒ߿ߔ޿‫↪ࠍࠇߎޕ‬޿ߡ㧘࿑㧟ߦ␜ߔ⋥ᓘ 1m ߩ౞ᒻ゠㆏ࠍ⵾૞ߒߚ‫ޕ‬㧙㧙

 ផㅴ↪ࠦࠗ࡞ ౞ᒻ゠㆏਄ߦᶋ਄ߒߚᶋ਄૕ࠍផㅴߔࠆߚ߼㧘ࡄ࡞ࠬ㔚ᵹࠍㅢ㔚ߔࠆផㅴࠦࠗ࡞ࠍ↪޿ߚ‫ߪ࡞ࠗࠦޕ‬⍱ᒻߢ㧘
0.6mmǾߩ㌃✢ࠍ300࠲࡯ࡦᏎ޿ߚ‫ߩߘޕ‬ᄖ஥ኸᴺߪ


50mm50mmߢ޽ࠆ‫ߩߘޕ‬᭎ⷰࠍ࿑㧢ߦ␜ߔ‫ޕ‬ ߎߩផㅴ↪ࠦࠗ࡞ࠍ౞ᒻ゠㆏ߩ⋥ਅߦ㧢୘⸳⟎ߒߚ‫ޕ‬  ࿑㧞 ⊒ᵃࠬ࠴ࡠ࡯࡞⵾ૐ᷷଻ᜬኈེ



















 ࡈࠜ࠻࠻࡜ࡦࠫࠬ࠲ߣ .'& ߦࠃࠆ૏⟎ᬌ಴ⵝ⟎ ᶋ਄૕߇ࠦࠗ࡞਄ߦ᧪ߚᤨߦ೨ㅀߩផㅴ↪ࠦࠗ࡞ߦࡃ࿑㧢 ផㅴ↪ࠦࠗ࡞࿑㧟 ࡜ࡃ࡯⏛⍹⵾౞ᒻ゠㆏࡞ࠬ㔚ᵹࠍᵹߒߡផㅴߔࠆ‫߼ߚߩߎޕ‬㧘ᶋ਄૕ߩ૏⟎ᬌ಴↪ߦࡈࠜ࠻࠻࡜ࡦࠫࠬ࠲ߣ .'& ߦࠃࠆ૏⟎ᬌ಴ⵝ⟎ࠍ ౞ᒻ゠㆏ߪ㧘࡜ࡃ࡯⏛⍹㧤ᧄࠍኒ⌕ߐߖߡ㊀ߨวࠊߖ↪޿ߚ‫ߩߘޕ‬᭴ᚑࠍ࿑㧣ߦ␜ߔ‫ޕ‬ߚ߽ߩߢ㧘ᢿ㕙ߪ᏷40mm㧘㜞ߐ15mmߢ޽ࠆ‫⿥߼੍ޕ‬㔚ዉࡑࠣࡀ࠶࠻ߢ⌕⏛ߒߚ߽ߩࠍ㧘ᭂᕈࠍ⠨ᘦߒߡ࿑㧠ߦ␜ߔ᭽ߦ㈩೉ߒߚ‫߅ߥޕ‬㧘ߘߩ਄㕙⋥਄ߢߩ⏛᧤ኒᐲߪᦨᄢ⚂500ࠟ࠙ࠬߢ㧘ታ᷹ߒߚ⏛᧤ኒᐲಽᏓࠍ࿑㧡ߦ␜ߔ‫ޕ‬࿑㧣 ࡈࠜ࠻࠻࡜ࡦࠫࠬ࠲.'& ૏⟎ᬌ಴ⵝ⟎ ផㅴ࡙࠾࠶࠻࿑㧠 ࡜ࡃ࡯⏛⍹⵾౞ᒻ゠㆏ᢿ㕙᭴ㅧ࿑ ೨ㅀߩផㅴ↪ࠦࠗ࡞ߣశ૏⟎ᬌ಴ⵝ⟎㧘߅ࠃ߮ࠦࡦ࠺ࡦࠨࠍ⚵ߺวࠊߖߡផㅴ࡙࠾࠶࠻ࠍ᭴ᚑߒߚ‫ޕ‬ផㅴ࡙࠾࠶࠻ߩ᭴ᚑࠍ࿑㧤ߦ␜ߔ‫ߩߎޕ‬ផㅴ࡙࠾࠶࠻ࠍ࿑㧥ߦ␜ߔ᭽ߦ㧘㧢࡙࠾࠶࠻゠㆏਄ߦ㈩⟎ߒߚ‫ޕ‬࿑㧡 ࡜ࡃ࡯⏛⍹⵾౞ᒻ゠㆏ᢿ㕙᭴ㅧ࿑࿑㧤㧙㧙ផㅴ࡙࠾࠶࠻ߩ᭴ᚑ࿑  ࡃ࡞ࠬࠦࠗ࡞᡼㔚ߩᦨㆡ࠲ࠗࡒࡦࠣ㧠㧚ታ㛎⚿ᨐ࿑㧥 ផㅴ࡙࠾࠶࠻ߩ㈩⟎࿑㧟㧚ታ㛎ᣇᴺ ᶋ਄․ᕈ ೨ㅀߩࠃ߁ߦ㧘޽ࠆೋᦼ⌕⏛ࠡࡖ࠶ࡊߦ㜞᷷⿥㔚ዉ⭯ ࡈࠖ࡯࡞࠼ࠢ࡯࡞᧼ࠍ࿕ቯߒߡࡈࠖ࡯࡞࠼ࠢ࡯࡞ߦࠃࠅ⌕⏛ߒߚ႐ว㧘࿕ 㜞᷷⿥㔚ዉࡃ࡞ࠢ૕ࠍ⌕⏛ߒ゠㆏਄ߦ቟ቯߦᶋ਄ߐߖቯᴦౕࠍขࠅ෰ࠆߣᶋ਄૕ߪ޽ࠆ⒟ᐲᴉਅߒߡቯᏱ⊛ߥࠆߚ߼㧘ࡈࠖ࡯࡞࠼ࠢ࡯࡞ߩᚻᴺࠍ↪޿ߚ‫ߜࠊߥߔޕ‬㧘ᶋ਄૏⟎ߦ⪭ߜ⌕ߊ‫ߩߘޕ‬႐วߩ㧘ೋᦼ⌕⏛ࠡࡖ࠶ࡊߣ㜞᷷⿥㔚ዉߩ⭯᧼ࠍ෼⚊ߒߚૐ᷷ኈེࠍ㧘࡜ࡃ࡯⏛⍹゠ቯᏱᶋ਄⁁ᘒߦ߅ߌࠆࠡࡖ࠶ࡊߩ㑐ଥࠍ⴫  ߦ␜ߔ‫ޕ‬㆏਄ߩ৻ቯ૏⟎ߦ࿕ቯߒߚ⁁ᘒߢ㧘ૐ᷷ኈེߦᶧ૕⓸⚛

⴫  ೋᦼ⌕⏛ࠡࡖ࠶ࡊߣቯᏱᶋ਄ࠡࡖ࠶ࡊ

ࠍలႯߒߡ಄ළߒ㧘⏛᧤ࠍ㜞᷷⿥㔚ዉ૕ߦ⽾ㅢߐߖߡ⌕⏛ߒߚ‫⏛࡯ࡃ࡜ޕ‬⍹ߣ㜞᷷⿥㔚ዉ૕ߣߩ㑆ߩೋᦼࠡࡖ࠶ࡊߪ OO ߦ⸳ቯߒߚ‫ޕ‬ೋᦼ⌕⏛ࠡࡖ࠶ࡊ(mm)ቯᏱᶋ਄ࠡࡖ࠶ࡊ(mm)

1

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12


 ࡃ࡞ࠬࠦࠗ࡞ߦࠃࠆផㅴ ᶋ਄૕ߦផㅴജࠍਈ߃ࠆߚ߼㧘࿑ 10 ߦ␜ߔ᭽ߦ㧘ᶋ਄

45૕ߦ෼⚊ߐࠇߡ޿ࠆ㜞᷷⿥㔚ዉ⭯᧼ߩᓟ✼߇ࠦࠗ࡞ౝߦ

6ᱷ⇐ߒߡ޿ࠆ⍍㑆ߦ㧘ࠦࡦ࠺ࡦࠨߦ⫾߃ࠄࠇߡ޿ࠆ㔚⩄7ࠍࠦࠗ࡞ߦ᡼㔚ߐߖߡផㅴߒߚ‫ޕ‬ታ᷹ߦࠃࠇ߫㧘㜞᷷⿥8㔚ዉ⭯᧼ߩᓟ✼߇ࠦࠗ࡞ߩਛᔃ✢਄ߦ޽ࠆ⍍ᤨߦ᡼㔚ߔࠆ႐ว߇ᦨ߽᦭ലߦផㅴߢ߈ߚ(࿑ 11)‫߅ߥޕ‬㧘࠲ࠗࡒࡦ

9ࠣߪ೨ㅀߩࡈࠜ࠻࠻࡜ࡦࠫࠬ࠲ߣ⿒ᄖ LED ࠍ↪޿ߚశ

1011࠮ࡦࠨ࡯ࠍ↪޿ߡᬌ಴ߒߚ‫ޕ‬

12



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4
4
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5

5
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13
7

 ߘߩᓟߩታ㛎ߢ㧘ೋᦼ⌕⏛ࠡࡖ࠶ࡊ 11mm ߩ႐ว߇ᦨ

߽቟ቯߥ⿛ⴕ․ᕈ߇ᓧࠄࠇߚߩߢ㧘ೋᦼ⌕⏛ࠡࡖ࠶ࡊࠍ

11mm ߦߒߡታ㛎ࠍⴕߞߚ‫ޕ‬ ടㅦ․ᕈ

 ផㅴ↪ࡄ࡞ࠬࠦࠗ࡞ࠍ↪޿ߡᶋ਄૕ࠍផㅴߒߚ႐วߩ
ട ㅦ ․ ᕈ ࠍ ࿑ 12 ߦ ␜ ߔ ‫ ޕ‬ห ࿑ ߆ ࠄ 㧘 ᦨ ⚳ ㅦ ᐲ ߪ ⚂

0.9m/s(3.2km/h)ߦߥࠆߎߣ߇್ࠆ‫߅ߥޕ‬㧘ㆇォᤨ㑆200⑽ઃㄭߢ㧘ㅦᐲߩૐਅ߇⷗ࠄࠇࠆ߇㧘ߎࠇߪᶧ૕⓸⚛ߩ⫳⊒ߦࠃࠅ㜞᷷⿥㔚ዉ૕ߩ᷷ᐲ߇਄᣹ߒߡᶋ਄ജ߇ૐਅߒ࿑  ࡄ࡞ࠬࠦࠗ࡞ߦࠃࠆផㅴේℂ㧙㧙ᶋ਄૕ߩᐩ㕙߇゠㆏ߣធ⸅ߒᆎ߼ߚߎߣ㧘߅ࠃ߮➅ࠅ㄰ߒㅢ㔚ߦࠃࠆࠦࠗ࡞ߩㆊᾲߦଐࠆ߽ߩߣᕁࠊࠇࠆ‫ޕ‬࿑  ࡄ࡞ࠬࠦࠗ࡞ߦࠃࠆടㅦ․ᕈ

㧡㧚߻ߔ߮ ᧄታ㛎ߦ↪޿ߚ࡜ࡃ࡯⏛⍹ߪ቟ଔߢ޽ࠅ㧘߹ߚᒢജᕈ߇޽ࠆߚ߼ኈᤃߦᦛߍടᎿ߇น⢻ߢછᗧߩᒻ⁁ߩ⏛᳇゠㆏ࠍㅧࠅᤃ޿‫⎇ᧄޕ‬ⓥ߇㧘◲ᤃߥ⿥㔚ዉߩ࠺ࡕࡦࠬ࠻࡟࡯࡚ࠪࡦ↪ߩⵝ⟎૞ᚑߩ৻ഥߣߥࠇ߫ᐘ޿ߢ޽ࠆ‫ޕ‬㧙㧙