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求fh3函数在[0.001 0.01]和[0.003 0.1]之间的最小值,估计在1至5之间。 $ {1 m+ s' L0 p% s% r
function f=fh3(n)
2 z7 X( I/ q$ [g2=2^0.5-1;6 c( e9 m- }/ [4 U
mu0=4*pi*10^(-7);
: C6 [# t! L7 F! }: ^gaf=7.8*10^3;. _9 d0 Z- D O4 B: \8 Y8 t" p% b3 \
gacu=8.9*10^3;9 C3 P% |% x% ]" i
gat=4.5*10^3;
% [# X( s% ^! y9 pgaa=2.7*10^3;
0 y+ |: P* G$ S1 \p=2.7*10^4;
& }0 K' u- f* Z( ?+ u5 aq=3*10^(-5);
& H! R- [: \$ |# _4 Krou=0.7;1 i8 L& Y: F' r- F; W" q
kb=0.9;& p/ a0 b! q; Z1 {8 b, q
%j0=8*10^6;1 A+ ]6 t* z& X3 H/ \8 M2 n( R
j0=2*10^6;
% j! q- }2 }( ~$ r p2 w3 A- @kd=3;, c2 S5 ?2 q: Y- n- L5 c
bm=2;9 f% Q" t4 a8 O1 P* J5 i# I
ht=2*10^(-3);! P3 N: I7 m3 V/ v6 i* [
mu1=10^8/1.75;- W! M1 m) u- k
kt1=2*pi*gat*ht;
" ]) O0 m6 M/ k" Y5 x; x6 _kt2=2*pi*gaa*ht;2 t0 Y( g- k* n$ H% _( v
kr=1.02;: ]# v+ g% l& N6 y
ku=(mu0/2/bm)^0.5;7 M% z+ j2 E4 J5 p1 T9 i3 c, q: j4 V
kx=mu0^0.5*kb*kd^2*j0;
1 L d( }" l( l" I( Rkp=(2*q/pi/p)^0.5;
& _' M* D8 p/ _% K4 D1 e0 \. o4 [. kkg=mu0^0.5*kb*kd*j0*g2;% o% u, k& t$ y6 z8 _$ e
rx=ku*kx-kp*kg;" J# {2 P& K, ^. x5 o/ ^" G) @
ra=ku*kg;
/ A4 ]# z2 f* ^& g0 U* prc=kp*kx;* J7 Q) r1 K$ I, |2 A+ Q E
kj=mu0*kb*kd*j0;7 o+ C" b) i2 F: B# J5 {% c- v
kj=kj/kx;6 n& [6 u$ U: u! l2 `7 B
h0=3*ht;
|/ h- u1 z1 Z1 n3 {( I/ @h1=2*(1+1/rou)*q/pi;2 n* P5 A5 A/ I1 P8 ^
h2=2*(kd-1);
+ O4 e- A/ _5 a& t4 Uh3=1/bm*(mu0*p*q/(2*pi))^0.5;
; }9 ~2 q$ ?( `8 V9 gh4=1/kj*(mu0*p*q/(2*pi))^0.5;3 _. P2 g, z" z1 C4 z6 E! V
hg=2*pi*kr*ht;
. o: l2 T- N0 R! d/ bw1=gaf/bm*(pi*p*q*mu0/2)^0.5;
! [ s1 w) \3 xw1p=8*g2*kd*w1;
( @. ]: x% {. i3 c( Kw2=2*kd^2*gaf*(2*pi*mu0*p*q)^0.5/kj;! M4 ?# l8 o& y) _
w3p=2*g2*gacu/kj*(2*pi*p*q*mu0)^0.5;2 Z) U" z7 g V! H- W) r( Q
w3pp=hg*h3;
- s$ S7 k' E3 Z0 O2 Ww3=w3p+w3pp;# v+ A" ]( }) a$ F( n
w4=2*kd*gacu/kj*(2*pi*p*q*mu0);
9 j' H- f- L- c5 V- P+ w- Dw5=5*pi*ht*gat;1 u- v% [) d' I* p
w6=hg*h0*gat;- ?$ J6 s7 A) y2 ^: Y3 r' U
w7=hg*h1*gat;. N z4 I4 E* M( ]( b- \! m, w
w8=hg*h0*gat;/ e# Q# F# S3 G
w9=hg*h4*gat;
' U D% c8 Q. a. _f=w1p*r*x^0.5+w2*x^1.5/(g2*r-kd*x)+w3*r*x^(-0.5)+w4*x^0.5+w5*r^2+w6*r+w7/r+w8*r*x+w9*r*x^(-0.5)/(g2*r-kd*x);5 I; f4 ^0 T' x- a/ N# B
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