, , .
- . 1, :
W1 ( );
W2 ;
u ;
1 () , .
. 1.
u i. , :
B = f (H),
B ; H .
, m = const, m >> m0 (m0 = 4 10 -7 / ), .. , B = f (H). g ( g (0,7 0,93) 107 1/∙ [2, . 731], g (2 2,5) 106 1/∙).
, Z, (. 2).
, [2, . 651],
rot = , (1)
rot = - j wgm , (2)
.
(1) (2)
rot rot = - j wgm . (3)
|
div = 0, (4)
Ñ 2 = j wgm . (5)
Ñ 2 , Z (.. ), :
+ = 0, (6)
(r1 < r < r2)
qr = r (w = 2p f, f , q2= -jwgm), r, , , .
[2], (6) :
= Jo (qr) + N (qr) (7)
;
J (qr) ;
N (qr) .
(7) r, γ, ω, , (7) :
= J0 (qr). (8)
(2), rot r, , = , .. - (. . 2). ( ).
|
|
, (9)
(r1 < r < r2)
J1 (qr) .
.
,
).
(9)
,
. (10)
(10) (9)
(r1 ≤ r≤ r2). (11)
, = , (8) (10), r1 < r < r2.
, (12)
- . (12)
(13)
, , , .
(12) (13)
(14)
(14) δ , .. :
(15)
, (14, 15), > 20 1 . , , (r = r1) = 2 πf = 314 /, f = 50 , = 1000 , = 4 π 10-7 /; = 0,8 ∙ 107 1/ ; r = r 1 = 15 = =15 10-3 ; = 26,65 ;
0,014 + 1,013 1 = .. .
(r = r1), , ,
(16)
(16) , , [2, . 655], , . , () . - , .. , .
, , ω, γ,
,
50 . :
(/2) (17)
, (11) (15) -.
- :
. (18)
( r = r1)
, W 2, .
, , , , h, W 2,
|
|
() (19)
(19) , , .. , .
(19), , W 2 45º, , , .
, , γ ≈ 0 (, ), 90º, .. ,
. (19) :
r 1 = 15,0 , h = 40 , γ = 0,8 107 1/,
r 2 = 18,0 , μ = 1000 μ 0 f = 50 ,
= 4 , W 1 = 1 W 2 = 200
W 2 U mc = 0,075 = 75 .