?12-1 HoéH?￥?Y HoéH?￥?Y Hoé?￥H?? <1 Hoé?￥H?? <1 BBB ′ += vvv 0 HoéH?7 HoéH?7 á 3?FH? á 3?FH? ? b?￥ H?? < H?? < z?l ?l 0 B B r =μ ----MH? q 0 B B r =μ (1) ¨Hé ¨Hé μ r >1, ' ' B>B 0 (2) FHé FHé μ r <1, ' ' B<B 0 (3)MHé MHé μ r >>1, ' ' B>>B 0 ¨Hé? FHé ¨Hé? FHé : μ r ≈1±10 -5 ≈ 1 ---- DH?té MHé MHé   μ r >>1 ---- <H?té ?12-2 e0￥H  e0￥H  ¨Hé? FHé ¨Hé? FHé B B . e0￥H  e0￥H  nm eISp vv = ?è @H  ?è @H  : è0E??￥H  è0E??￥H  : r ev vr e I ππ 2/2 == 22 2 evr r r ev ISp m === π π è0E????  è0E????  vrmL e = 2 evr p m = e0 = ?μè0￥9E? e0 = ?μè0￥9E? ??  ^ 0?￥ h l mL = L m e e 2 = e0è0E?9H  e0è0E?9H  9 ^ 0?￥ J/T1027.9 2 24? ×== h e m m e p 1= l m H H = = . ¨Hé? FHé￥±43 d ¨Hé? FHé￥±43 d zs0%μH  s0%μH    s0? ?μ￥è s0? ?μ￥è 0E?H ?1èH ￥ O ? 0E?H ?1èH ￥ O ? m p v z FHés0 FHés0 : z ¨Hés0 ¨Hés0 : 0= m p v 0≠ m p v M v m p v ? L v 0 B v 1. FHé FHé è0E?H  è0E?H    m p v )( vmrL vv v ×= E???  E???  ?FH? ?FH? è0￥E? è0￥E? ? s?H ? ￥T¨ ? s?H ? ￥T¨ 0 BpM m v v v ×= m p v p v ? M v m p v ? L v 0 B v 0 BpM m v v v ×= dt HW = HW = : tML d vv +L v è0á 3B?Dé? è0á 3B?Dé? M?￥?FH  M?￥?FH  p v ? ----D D Q_ Q_ 0 B v B?s0￥?FH  B?s0￥?FH  ∑ ?=? pp m vv p v ? M v m p v ? L v 0 B v ?B8í?v ?B8í?v s0￥?FH  O s0￥?FH  O ?D?H?Q_ ?D?H?Q_ á 3D?H?Z_M á 3D?H?Z_M Q￥ Q￥ ?FH? ?FH? z?FH  ?FH  ^á 3 FH?￥·Bey ^á 3 FH?￥·Bey 2. ¨Hé ¨Hé F?H?a%μH  F?H?a%μH  H ?  T¨/_?H?Z_ ? b?H T¨/_?H?Z_ ? b?H ? <?"￥ ? ? b ? <?"￥ ? ? b m p v ?CB?D?H?]Z_￥ ?CB?D?H?]Z_￥ ?FH? ?FH? B ′ v s0%μH _ s0%μH _ ^á 3 ¨H? ^á 3 ¨H? ￥?1ey ￥?1ey s0?FH  V- { s0?FH  V- { ?9 ?9 ?12-3 Hoé￥H? Hoé￥H? H? < H? < B B . Hoé￥H? Hoé￥H? N S HoéV ?C HoéV ?C H?è @ H?è @ ∫ ∑ +=?∴ L s IIlB )(d 0 μ vv ¨HéH?è @￥H?D?H? ¨HéH?è @￥H?D?H? Z_Bá FHé5MQ Z_Bá FHé5MQ B B . H? < H? < ì ^? ? ì ^? ? H v z[ ?ò_]? ( [ ?ò_]? ( ¨Hé￥ ? ?ì1 è ¨Hé￥ ? ?ì1 è × × × × × × × × × × × × × × × × × × × × × × × × × r μ N I r 0 L ∫ +=? L s INIlB )(d 0 μ vv Q )(2 0 s INIrB +=?∴ μπ yíHoé H yíHoé H NIrB 00 2 μπ =? 0 B B r =∴μ NI INI s + = NIINI rs μ=+ )(2 0 s INIrB +=? μπ NIrB 00 2 μπ =? ∫ +=? L s INIlB )(d 0 μ vv NI r μμ 0 = r μμμ 0 = ----Hoé￥H? q 7 ∫ =? L NIlB μμ 0 d vv ∫ ∑ =?∴ L IlB μ vv d μBH vv = ----H? < H? < (A/m) 7 7 ∫ ∑ =?∴ L IlH vv d .?è @ .?è @ ----Hoé?￥? ?ì ^? ? [ è è 16]??1 ??1 R 1 ￥íKé ￥íKé ???8 ???8 (μ ≈ μ 0 )?μ ?μ B??1 B??1 R 2 ￥íKé] ￥íKé] à?? ? ?W ? à?? ? ?W ? MH? q1 MH? q1 μ r ￥ ( ￥ ( Hoéb !è @ Hoéb !è @ IV?? V?? 8? ( @Vi?? 8? ( @Vi?? ? ? @íb pH?￥s ?b r ε 1 R I I 3 3 T??1 T??1 r ￥??1sí ^ ￥??1sí ^ L Lí ^? ??￥è @ í ^? ??￥è @ z r<R 1  2 2 1 r R I I π π = ′ r ε I I 1 R 2 R ∫ ?∴ L lH vv d rHπ2= I R r 2 1 2 ='I= L r I R r H 2 1 2π =∴ I R r B 2 1 0 2π μ = zR 1 < r <R 2  ∫ =? L rHlH π2d vv I= r ε I I 1 R 2 R L r L r I H π2 =∴ r I B r π μμ 2 0 = r ε I I 1 R 2 R L r L z r>R 2  ∫ =? L rHlH π2d vv 0=II?= 0=∴H 0=B H?s?Dè @ ?@· m ?è?5 H?s?Dè @ ?@· m ?è?5 ?12-4 MHé MHé B B .'?é '?é (1)MH? q MH? q μ r >>1  B? Vr B? Vr 10 2 ~10 4   Kú Vr Kú Vr 10 6 (2)μ ? ? H7M? 7M?   ' ' BD D H-W ^ -W ^ dL?1" dL?1" B H 0 a b c s  SH? wL  SH? wL S B (3)HìC` HìC` B H 0 c H r B s B r : :?H? :?H? ? < ? < H c :?? ? ?? ? HìíL HìíL (4)MHéμB "?? MHéμB "?? T c ---  ú?  ú? zyT?ú? yT?ú? T c HMHé| HMHé| T > MH?7?1 ¨Hé T > MH?7?1 ¨Hé = = . ±43 d ±43 d zH H M #e0?￥ M #e0?￥ è01èH 1?1 è01èH 1?1 ü? ? ??B? ü? ? ??B? ?l￥ ?l￥ 1?H? u 1?H? u (1)í?H? í?H? òHH òHH ?Z_ ?Z_  yíc  yíc ----??AH? (2)?FH? ?FH? H?? D H?? D 1?H?Z_D?H? 1?H?Z_D?H? Z_M]Mí￥H￥8?v Z_M]Mí￥H￥8?v 9vQ-5?v êl 9vQ-5?v êl (C? C? ) H?? < H?? < êl"￥Hh >  ? êl"￥Hh >  ? H￥H?Z__??Z_b?? H￥H?Z__??Z_b??  <_ sb ?μH??  <_ sb ?μH?? H?Z_ ?  H5r??H? ? H?Z_ ?  H5r??H? ? ----H?? < (3) ?"?H? ?"?H? s ??Hb? s ??Hb? ??? =? ??eyH-W ??? =? ??eyH-W i ?E ? PH? ??ˉ? i ?E ? PH? ??ˉ? H? -￥ y ?  ? H? -￥ y ?  ? ----VCHìC` (4)T 6ú 6ú   s0 ￡?F  s0 ￡?F  bT >T c H H H ??$ ?ê1 ¨Hé H ??$ ?ê1 ¨Hé ----i  ú? i  ú? 'c5 'c5 9-23a9-24