²é¿´: 835  |  »Ø¸´: 8

˸˸88

Òø³æ (ÕýʽдÊÖ)

[ÇóÖú] ÓÐʱ¼äµÄ»°£¬ÄÜ·ñ°ïÎÒ¿´Ò»¸ö³ÌÐò£¬½á¹ûËã³öÀ´ÁË£¬ÔÚ»­Í¼µÄµØ·½³ö´íÁË£¬²»ÖªµÀÈçºÎ½â¾ö ÒÑÓÐ2È˲ÎÓë

ÓÐʱ¼äµÄ»°£¬ÄÜ·ñ°ïÎÒ¿´Ò»¸ö³ÌÐò£¬½á¹ûËã³öÀ´ÁË£¬ÔÚ»­Í¼µÄµØ·½³ö´íÁË£¬²»ÖªµÀÈçºÎ½â¾ö

ÓÐʱ¼äµÄ»°£¬ÄÜ·ñ°ïÎÒ¿´Ò»¸ö³ÌÐò£¬½á¹ûËã³öÀ´ÁË£¬ÔÚ»­Í¼µÄµØ·½³ö´íÁË£¬²»ÖªµÀÈçºÎ½â¾ö
1.png


ÓÐʱ¼äµÄ»°£¬ÄÜ·ñ°ïÎÒ¿´Ò»¸ö³ÌÐò£¬½á¹ûËã³öÀ´ÁË£¬ÔÚ»­Í¼µÄµØ·½³ö´íÁË£¬²»ÖªµÀÈçºÎ½â¾ö-1
2.png
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

feixiaolin

ÈÙÓþ°æÖ÷ (ÎÄ̳¾«Ó¢)

ÓÅÐã°æÖ÷

ÊÔÒ»ÏÂ
Root=(solve(f,V));
if Root(1)>0
  V1=Root(1);
if Root(2)>=0
  V1=Root(2);
end

plot ¡­
2Â¥2014-12-18 20:38:27
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

lsp1005

ľ³æ (ÕýʽдÊÖ)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
»­Í¼²»ÄÜÖ±½ÓÓú¯Êý±í´ïʽ£¬ÒªÏȼÆËã³öÀëÉ¢µãµÄÖµ¡£ÔÙÓÃÀëÉ¢µã»­Í¼£¬ÓÃSubsÃüÁî
ÁõÈýƤ
3Â¥2014-12-18 21:53:41
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

˸˸88

Òø³æ (ÕýʽдÊÖ)

ÒýÓûØÌû:
3Â¥: Originally posted by lsp1005 at 2014-12-18 21:53:41
»­Í¼²»ÄÜÖ±½ÓÓú¯Êý±í´ïʽ£¬ÒªÏȼÆËã³öÀëÉ¢µãµÄÖµ¡£ÔÙÓÃÀëÉ¢µã»­Í¼£¬ÓÃSubsÃüÁî

»¹ÇëÎʸÃÈçºÎÓÃsubsÃüÁîÄØ
4Â¥2014-12-19 08:53:37
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

˸˸88

Òø³æ (ÕýʽдÊÖ)

ÒýÓûØÌû:
2Â¥: Originally posted by feixiaolin at 2014-12-18 20:38:27
ÊÔÒ»ÏÂ
Root=(solve(f,V));
if Root(1)>0
  V1>=Root(1);
if Root(2)>=0
  V1=Root(2);
end

plot ¡­

»¹ÊÇÓÐÎÊÌ⣬solve£¨f,V£©µÃµ½µÄÊÇÒ»¸ö¹ØÓÚrµÄº¯Êýʽ£¬ÎÒ²»ÖªµÀÊÇÈçºÎ»æÖÆÕâ¸öº¯ÊýͼÐΣ¬¿´ÁËһЩÊÔÁËÊÔ¶¼»á³ö´í£¬±ÈÈçÎÒÑùд
ÓÐʱ¼äµÄ»°£¬ÄÜ·ñ°ïÎÒ¿´Ò»¸ö³ÌÐò£¬½á¹ûËã³öÀ´ÁË£¬ÔÚ»­Í¼µÄµØ·½³ö´íÁË£¬²»ÖªµÀÈçºÎ½â¾ö-2
1.png

5Â¥2014-12-19 09:06:38
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

wurongjun

ר¼Ò¹ËÎÊ (Ö°Òµ×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
Ìù´úÂëÉÏÀ´!
ÈÝÒ׸ĵã!
ÉÆ¶ñµ½Í·ÖÕÓб¨,È˼äÕýµÀÊDz×É£.
6Â¥2014-12-19 09:24:17
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

˸˸88

Òø³æ (ÕýʽдÊÖ)

ÒýÓûØÌû:
6Â¥: Originally posted by wurongjun at 2014-12-19 09:24:17
Ìù´úÂëÉÏÀ´!
ÈÝÒ׸ĵã!

function V1=Elec_Cap(l,d,E,e0)
%V1=Elec_Cap(l,r,d,E,e0)
syms h1 h2 r V
format short
[l,d,E,e0,n]=deal(10,5,0.12,8.854*10^(-18),2)
c1=d*sqrt(5)/4
g=5*sqrt(0.119643*c1^2+h2^2/4)/9+8*sqrt(27*c1^2/64+h2^2/4)/9+5*sqrt(0.55535*c1^2+h2^2/4)/9-l;
h2=solve(g,h2)
for i=1:1:7
    if h2(i)>0&&h2(i)<l
        h1=h2(i)
    end
end
F=V^2*10^6*(-8*pi*e0*l/acosh(1/2*(d^2-2*r^2)/r^2)^2*d/r^2/(2*(d^2-2*r^2)/r^2-4)^(1/2)/(2*(d^2-2*r^2)/r^2+4)^(1/2))/2;
f=F*2/sqrt(5)+3*pi*c1*E*r^3/(4*h1^3);
V=solve(f,V)
%for i=1:1:2
%    if V(i)>0
%      V=V(i);
%    end
%end
format short
r=1:1:2
V1=V(2)%VµÄ½á¹ûÓÐÁ½¸öÈçºÎÈ¥µôÄǸö´ø¸ººÅµÄÄØ£¿ÎÒ¿´½á¹ûÓÐÁ½¸ö½â£¬ÎÒ¾ÍÕâÑùÖ±½ÓÈ¡V(2)¾ÍÊÇÎÒÒªµÄÄǸöVµÄ½â£¬µ«ÊÇÈôÊDz»ÖªµÀ½âÓжàÉÙ¸ö£¬ÒªÔõôÅжϣ¿
plot(r,V1)%Ìáʾ´íÎ󣬲»ÖªÈçºÎÈ¥´¦Àí£¿
7Â¥2014-12-19 11:32:49
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

wurongjun

ר¼Ò¹ËÎÊ (Ö°Òµ×÷¼Ò)

ÒýÓûØÌû:
7¥: Originally posted by ˸˸88 at 2014-12-19 11:32:49
function V1=Elec_Cap(l,d,E,e0)
%V1=Elec_Cap(l,r,d,E,e0)
syms h1 h2 r V
format short
=deal(10,5,0.12,8.854*10^(-18),2)
c1=d*sqrt(5)/4
g=5*sqrt(0.119643*c1^2+h2^2/4)/9+8*sqrt(27*c1^2/64+h2^2/4)/ ...

h2ûÓÐʵÊý½â!
ÉÆ¶ñµ½Í·ÖÕÓб¨,È˼äÕýµÀÊDz×É£.
8Â¥2014-12-19 12:03:22
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

wurongjun

ר¼Ò¹ËÎÊ (Ö°Òµ×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

ÒýÓûØÌû:
7¥: Originally posted by ˸˸88 at 2014-12-19 11:32:49
function V1=Elec_Cap(l,d,E,e0)
%V1=Elec_Cap(l,r,d,E,e0)
syms h1 h2 r V
format short
=deal(10,5,0.12,8.854*10^(-18),2)
c1=d*sqrt(5)/4
g=5*sqrt(0.119643*c1^2+h2^2/4)/9+8*sqrt(27*c1^2/64+h2^2/4)/ ...

h2²»ÔÚ(0,1)ʱ,h1Ôõôȡֵ?
ÉÆ¶ñµ½Í·ÖÕÓб¨,È˼äÕýµÀÊDz×É£.
9Â¥2014-12-19 12:07:57
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ ˸˸88 µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 0805 316Çóµ÷¼Á +4 ´óÑ©Éî²Ø 2026-03-18 4/200 2026-03-24 17:34 by dick_runner
[¿¼ÑÐ] 306Çó0703µ÷¼ÁÒ»Ö¾Ô¸»ªÖÐʦ·¶ +10 Ö½Óãly 2026-03-21 11/550 2026-03-24 17:22 by qingfeng258
[¿¼ÑÐ] 0703»¯Ñ§µ÷¼Á£¬Çóµ¼Ê¦ÊÕ +6 ÌìÌìºÃÔËÀ´Éϰ¶° 2026-03-24 6/300 2026-03-24 17:19 by dick_runner
[¿¼ÑÐ] Çóµ÷¼ÁÒ»Ö¾Ô¸Î人Àí¹¤´óѧ²ÄÁϹ¤³Ì£¨085601£© +5 WW.' 2026-03-23 7/350 2026-03-24 14:50 by sprinining
[¿¼ÑÐ] 321Çóµ÷¼Á +4 Ymlll 2026-03-24 4/200 2026-03-24 14:44 by sprinining
[¿¼ÑÐ] 277·ÖÇóµ÷¼Á£¬¿çµ÷²ÄÁÏ +3 ¿¼Ñе÷¼Álxh 2026-03-24 3/150 2026-03-24 13:52 by JourneyLucky
[¿¼ÑÐ] ¡¾Ë«Ò»Á÷ԺУÐÂÄÜÔ´¡¢»·¾³²ÄÁÏ£¬²ÄÁϼӹ¤ÓëÄ£ÄâÕÐÊÕ´óÁ¿µ÷¼Á¡¿ +4 Higraduate 2026-03-22 7/350 2026-03-24 11:23 by ÖÖ´óÊ÷
[¿¼ÑÐ] 0703»¯Ñ§Çóµ÷¼Á +4 ÄÌÓͲÝÝ®. 2026-03-22 5/250 2026-03-23 19:37 by pswait
[¿¼ÑÐ] 315·Ö£¬³ÏÇóµ÷¼Á£¬²ÄÁÏÓ뻯¹¤085600 +3 13756423260 2026-03-22 3/150 2026-03-22 20:11 by edmund7
[»ù½ðÉêÇë] ɽ¶«Ê¡ÃæÉÏÏîÄ¿ÏÞ¶îÆÀÉó +4 ʯÈð0426 2026-03-19 4/200 2026-03-22 08:50 by Wei_ren
[¿¼ÑÐ] ¿¼Ñе÷¼Á +3 ºôºô£¿~+123456 2026-03-21 3/150 2026-03-21 20:04 by Î޼ʵIJÝÔ­
[¿¼ÑÐ] ²ÄÁϹ¤³Ìר˶ 348·ÖÇóµ÷¼Á +3 ¶¬´Ç. 2026-03-17 5/250 2026-03-21 18:47 by ѧԱ8dgXkO
[¿¼ÑÐ] 278Çóµ÷¼Á +9 ÑÌ»ðÏÈÓÚ´º 2026-03-17 9/450 2026-03-21 17:47 by ѧԱ8dgXkO
[¿¼ÑÐ] 266Çóµ÷¼Á +3 ÍÛºôºßºôºß 2026-03-20 3/150 2026-03-21 16:46 by barlinike
[¿¼ÑÐ] 22408 344·Ö Çóµ÷¼Á Ò»Ö¾Ô¸ »ªµç¼ÆËã»ú¼¼Êõ +4 solanXXX 2026-03-20 4/200 2026-03-20 23:49 by alg094825
[¿¼ÑÐ] 308Çóµ÷¼Á +3 °¢½ã°¢½ã¼Ò°¡ 2026-03-18 3/150 2026-03-20 23:24 by JourneyLucky
[¿¼ÑÐ] ²ÄÁÏѧ˶297ÒѹýËÄÁù¼¶Çóµ÷¼ÁÍÆ¼ö +11 adaie 2026-03-19 11/550 2026-03-20 21:30 by laoshidan
[¿¼ÑÐ] 295¸´ÊÔµ÷¼Á +8 ¼òľChuFront 2026-03-19 8/400 2026-03-20 20:44 by zhukairuo
[¿¼ÑÐ] 086500 325 Çóµ÷¼Á +3 Áì´øÐ¡ÐÜ 2026-03-19 3/150 2026-03-20 18:38 by ¾¡Ë´Ò¢1
[¿¼ÑÐ] 0856µ÷¼Á£¬ÊÇѧУ¾ÍÈ¥ +8 sllhht 2026-03-19 9/450 2026-03-20 14:25 by ÎÞи¿É»÷111
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û