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ΪʲôÕâ¸ö´úÂ룬»æÖƵķ½³ÌÇúÏßÖ»Äܵ½t=0.06×óÓÒ£¬¶øÎÒÉèÖõÄÊÇt=0.5,tÔÚ0.06ºó¾ÓÈ»Êǿհף¬Çó´óÉñ°ïÖúһϣ¡
dt=0.0000001;
t=0:dt:0.5;
R=1000000;S=58.0644*10^(-4);B=8.8541878*10^(-12);d=125/3400000;A=10*10^(-6);a=1;n=0.05;
z1=exp((1/(R*S*B))*(d.*t+(1/6)*a.*t.^3));
I1=1000000*(-(A*d/(R*B))+((A*(d+0.5*a.*t.^2))/(R*B)).*exp(-(1/(R*S...
    *B)).*(d.*t+(1/6)*a.*t.^3))+(A*d/(R*B))*((d+0.5*a.*t.^2)/(R*B...
    *S)).*exp(-(1/(R*S*B))*(d*t+(1/6)*a.*t.^3)).*cumtrapz(z1)*dt);
plot(t,I1)

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FMStation

ÖÁ×ðľ³æ (ÖªÃû×÷¼Ò)

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¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
t=0:dt:0.5;
dt=0.0000001;
plot(t,I1)

>> t(4999996:5000001)
ans =
   0.499999500000000   0.499999600000000   0.499999700000000
   0.499999800000000   0.499999900000000   0.500000000000000
2Â¥2016-08-20 14:28:40
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

FMStation

ÖÁ×ðľ³æ (ÖªÃû×÷¼Ò)

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I1 = NaN
NaN£¬ÊÇNot a NumberµÄËõд¡£
NaN ÓÃÓÚ´¦Àí¼ÆËãÖгöÏֵĴíÎóÇé¿ö
3Â¥2016-08-20 14:38:18
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

FMStation

ÖÁ×ðľ³æ (ÖªÃû×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

>> I1(588875:588876)
ans =
   0.040234532574412                 Inf

» ±¾ÌûÒÑ»ñµÃµÄºì»¨£¨×îÐÂ10¶ä£©

4Â¥2016-08-20 14:45:18
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

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гæ (СÓÐÃûÆø)

Ëͺ컨һ¶ä
ÒýÓûØÌû:
4Â¥: Originally posted by FMStation at 2016-08-20 14:45:18
>> I1(588875:588876)
ans =
   0.040234532574412                 Inf

ʲôÒâ˼°¡£¬Äã¸øÎÒ˵Ã÷°×Á˰¡£¡£¡£¡£¡

·¢×ÔСľ³æAndroid¿Í»§¶Ë
5Â¥2016-08-20 16:40:02
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

FMStation

ÖÁ×ðľ³æ (ÖªÃû×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

>>ÎÒÉèÖõÄÊÇt=0.5,tÔÚ0.06ºó¾ÓÈ»Êǿհ×
I1(588876) = Inf
dt=0.0000001;

®” t = 588876 * dt = 0.0588876,
I1=Inf, plot(t,I1)   =>  plot(0.0588876, Inf)

Ö®áá I1 ¶¼ÊÇ Inf
6Â¥2016-08-20 17:02:50
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

Ѱ³£

гæ (СÓÐÃûÆø)

ÒýÓûØÌû:
6Â¥: Originally posted by FMStation at 2016-08-20 17:02:50
>>ÎÒÉèÖõÄÊÇt=0.5,tÔÚ0.06ºó¾ÓÈ»Êǿհ×
I1(588876) = Inf
dt=0.0000001;

®” t = 588876 * dt = 0.0588876,
I1=Inf, plot(t,I1)   =>  plot(0.0588876, Inf)

Ö®áá I1 ¶¼ÊÇ Inf

лл£¬Õâ¸öÎÊÌâÓ¦¸ÃÔõô½â¾öÄØ£¿ÎÒ»¹ÊÇÐÂÊÖ£¬¶ÔMATLAB²»Ì«Á˽⣬ϣÍûÄãÄܰïÎÒ½â¾öÏ£¬Ð»Ð»£¡

·¢×ÔСľ³æAndroid¿Í»§¶Ë
7Â¥2016-08-20 17:23:09
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

FMStation

ÖÁ×ðľ³æ (ÖªÃû×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

I1=1000000*(-(A*d/(R*B))+((A*(d+0.5*a.*t.^2))/(R*B)).*exp(-(1/(R*S...
    *B)).*(d.*t+(1/6)*a.*t.^3))+(A*d/(R*B))*((d+0.5*a.*t.^2)/(R*B...
    *S)).*exp(-(1/(R*S*B))*(d*t+(1/6)*a.*t.^3)).*cumtrapz(z1)*dt);

®” t = 588876 * dt = 0.0588876,
I1 Öð헲²ðé_È¥¿´ËüµÄÖµ

» ±¾ÌûÒÑ»ñµÃµÄºì»¨£¨×îÐÂ10¶ä£©

8Â¥2016-08-20 17:33:58
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

Ѱ³£

гæ (СÓÐÃûÆø)

Ëͺ컨һ¶ä
ÒýÓûØÌû:
8Â¥: Originally posted by FMStation at 2016-08-20 17:33:58
I1=1000000*(-(A*d/(R*B))+((A*(d+0.5*a.*t.^2))/(R*B)).*exp(-(1/(R*S...
    *B)).*(d.*t+(1/6)*a.*t.^3))+(A*d/(R*B))*((d+0.5*a.*t.^2)/(R*B...
    *S)).*exp(-(1/(R*S*B))*(d*t+(1/6)*a.*t.^3)).*cumtrapz( ...

Äܲ»ÄÜͨ¹ýÐ޸ĴúÂ룬ʹº¯ÊýÄÜÔÚÉ趨µÄ·¶Î§»­³öÇúÏߣ¿Ð»Ð»

·¢×ÔСľ³æAndroid¿Í»§¶Ë
9Â¥2016-08-20 18:37:44
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

chendequan

Ìú³æ (СÓÐÃûÆø)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
ÒýÓûØÌû:
9Â¥: Originally posted by Ѱ³£ at 2016-08-20 18:37:44
Äܲ»ÄÜͨ¹ýÐ޸ĴúÂ룬ʹº¯ÊýÄÜÔÚÉ趨µÄ·¶Î§»­³öÇúÏߣ¿Ð»Ð»
...

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¹ØÓÚmatlab³ÌÐòÎÊÌâ-1
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