²é¿´: 2133  |  »Ø¸´: 7

bloomi

гæ (³õÈëÎÄ̳)

[ÇóÖú] matlab·ÇÏßÐԷֶη½³ÌÄâºÏ ¼±~лл~ ÒÑÓÐ2È˲ÎÓë

³õѧÕßÇó°ï棡
matlab·ÇÏßÐԷֶη½³ÌÄâºÏ ¼±~лл~
ÈçͼËùʾÊÇÒ»×é·ÇÏßÐԷֶη½³Ì£¬ÆäÖдýÄâºÏ²ÎÊýÓУºT0£¬Ta£¬tm£¬¦ÄT£¬ÒÔ¼°·Ö¶Îµãts¡£
ÎÒ³¢ÊÔʹÓÃlsqcurvefit½øÐÐÄâºÏ£¬µ«ÊÇ´úÂë±àдÓÐһЩÎÊÌâ¡£¡£²éÔÄÏà¹Ø×ÊÁÏÒ²²»Ì«ÖªµÀÕâÖֶַεã¾ÍÊÇδ֪²ÎÊýµÄ·½³ÌÓ¦¸ÃÈçºÎ±à³Ì£¬Ï£Íû´ó¼Ò¸øÓè°ïÖú


xdata = [ 5.5000    6.5000    7.5000    8.5000    9.5000   10.5000   11.5000   12.5000 13.5000   14.5000   15.5000   16.5000   17.5000   18.5000   19.5000   20.5000   21.5000   22.5000   23.5000   24.5000    1.5000    2.5000    3.5000    4.5000];
ydata = [299.0545  300.8932  304.5193  308.6715  311.6907  315.0223  315.7924  317.1786  315.0809  313.1319  312.8464  309.4712  305.4651  304.1893  302.5152  301.9055  303.4350  299.9959  299.2613  299.7677  299.4591  298.5113  298.7621  298.6650];
x0 = [299.05  40  14  0.5  17.4];

function F = fun(x,xdata)
if xdata > x(5)
    w = 4/3*(x(3) - 5.4);
    F = a + b*cos( 3.14/w.*( xdata -c ) );
elseif xdata <= x(5)
    w = 4/3*(c - 5.4);
    k = w/3.14 * ( atan( 3.14/w*(x(5)-x(3)) ) - d/b*asin( 3.14/w*( x(5)-x(3) ) ) );
    F = a + d + ( b*cos( 3.14/w*(ee-c) ) - d ) * k/( k + xdata - ee );
end
end

[x,resnorm] = lsqcurvefit(@fun,x0,xdata,ydata);

ÕâÑùÔËÐÐÖ®ºó»á±¨´í£º
Error using feval
Output argument "F" (and maybe others)
not assigned during call to
"F:\DTC\pros\fun1012.m>fun1012".

Error in lsqcurvefit (line 203)
            initVals.F =
            feval(funfcn_x_xdata{3},xCurrent,XDATA,varargin{:});
            
Caused by:
    Failure in initial user-supplied
    objective function evaluation.
    LSQCURVEFIT cannot continue.

×îºóÓ¦¸Ã¾ÍÊÇûÓÐFµÄ·µ»ØÖµÁË¡£¡£¡£ÎÒÕâ¸öÓï¾äдµÄÓ¦¸ÃÊǿ϶¨ÓÐÎÊÌ⵫ÊÇÎÒ²»Ì«ÖªµÀÊÇʲôÎÊÌâ¡£¡£Ï£ÍûÄܹ»Çë¸ßÈËÖ¸µãһϠлл£¡£¡£¡£¡£¡
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:

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

ÔÂÖ»À¶

Ö÷¹ÜÇø³¤ (Ö°Òµ×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
ÍÆ¼öÓÃ1stoptÈí¼þÀ´×ö¡£
MATLAB¡¢MSСÎÊÌâ¡¢ÆÕͨÎÊÌâÇë·¢ÌûÇóÖú£¡Ê±¼ä¾«Á¦ÓÐÏÞ£¬Ë¡²»½ÓÊÜÎÞ³¥Ë½ÐÅÇóÖú¡£
2Â¥2014-10-13 09:56:31
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

bloomi

гæ (³õÈëÎÄ̳)

ÒýÓûØÌû:
2Â¥: Originally posted by ÔÂÖ»À¶ at 2014-10-13 09:56:31
ÍÆ¼öÓÃ1stoptÈí¼þÀ´×ö¡£

ÒòΪҪÅúÁ¿×ö£¬ÓÐ2000¶àÕâÑùµÄ·½³ÌÐèÒªÄâºÏ£¬£¨xdata ydataÖµ²»Ò»Ñù£©ËùÒÔÏ£Íûдµ½³ÌÐòÀïÈ¥
3Â¥2014-10-13 12:02:24
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

´÷¸Ö¿øµÄÖíÍ·

ľ³æ (ÖªÃû×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
bloomi: ½ð±Ò+10, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2014-10-15 10:09:56
·Ö¶Îº¯Êý×îС¶þ³ËÄâºÏÄ¿±êº¯Êýµ¼Êý²»Á¬Ðø£¬¿É²ÉÓÃÁ½¶Îº¯ÊýµÄ¼ÓȨ¼ÓºÍ×÷ΪÄâºÏÄ£ÐÍ¡£¼ÓȨÒò×Ó¼ÙÉè·Ö±ðΪaºÍb£¬¿ÉÉè¼ÆÁ¬Ðø¹â»¬º¯Êý×÷Ϊ¼ÓȨÒò×Ó¡£Õâ¸öº¯ÊýÐèÒª±íÏÖ³ö½×Ô½ÐÔ£¬¿É²ÉÓÃij¸öÈý½Çº¯Êý¡£Èý½Çº¯Êý¶¼ÊdzõµÈº¯Êý£¬Á¬Ðø¿Éµ¼£¬¹Ê¿ÉÉè¼Æ¼ÓȨº¯ÊýÂú×㣺µ±tСÓÚtsʱ£¬a=1£¬b=0£¬·ñÔòa=0£¬b=1¡£¾ßÌåÄĸöÈý½Çº¯ÊýÄØ£¿Â¥Ö÷×Ô¼ºÈ¥Ñо¿Ï°ɣ¬ÊÚÈËÒÔÓã²»ÈçÊÚÈËÒÔÓæ¡£Õâ¸ö·½·¨·ÖÁ½¶Î£¬·Ö¶à¶Î¶¼¿ÉÒÔÓá£

[ ·¢×ÔÊÖ»ú°æ http://muchong.com/3g ]
4Â¥2014-10-14 15:48:59
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

´÷¸Ö¿øµÄÖíÍ·

ľ³æ (ÖªÃû×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

ÒýÓûØÌû:
4Â¥: Originally posted by ´÷¸Ö¿øµÄÖíÍ· at 2014-10-14 15:48:59
·Ö¶Îº¯Êý×îС¶þ³ËÄâºÏÄ¿±êº¯Êýµ¼Êý²»Á¬Ðø£¬¿É²ÉÓÃÁ½¶Îº¯ÊýµÄ¼ÓȨ¼ÓºÍ×÷ΪÄâºÏÄ£ÐÍ¡£¼ÓȨÒò×Ó¼ÙÉè·Ö±ðΪaºÍb£¬¿ÉÉè¼ÆÁ¬Ðø¹â»¬º¯Êý×÷Ϊ¼ÓȨÒò×Ó¡£Õâ¸öº¯ÊýÐèÒª±íÏÖ³ö½×Ô½ÐÔ£¬¿É²ÉÓÃij¸öÈý½Çº¯Êý¡£Èý½Çº¯Êý¶¼ÊdzõµÈº¯Êý ...

²¹³äaºÍb²»ÊÇͬһ¸öº¯Êý£¬µ«Óõ½Í¬Ò»¸öÈý½Çº¯Êý¡£

[ ·¢×ÔÊÖ»ú°æ http://muchong.com/3g ]
5Â¥2014-10-14 15:50:21
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

bloomi

гæ (³õÈëÎÄ̳)

ÒýÓûØÌû:
4Â¥: Originally posted by ´÷¸Ö¿øµÄÖíÍ· at 2014-10-14 15:48:59
·Ö¶Îº¯Êý×îС¶þ³ËÄâºÏÄ¿±êº¯Êýµ¼Êý²»Á¬Ðø£¬¿É²ÉÓÃÁ½¶Îº¯ÊýµÄ¼ÓȨ¼ÓºÍ×÷ΪÄâºÏÄ£ÐÍ¡£¼ÓȨÒò×Ó¼ÙÉè·Ö±ðΪaºÍb£¬¿ÉÉè¼ÆÁ¬Ðø¹â»¬º¯Êý×÷Ϊ¼ÓȨÒò×Ó¡£Õâ¸öº¯ÊýÐèÒª±íÏÖ³ö½×Ô½ÐÔ£¬¿É²ÉÓÃij¸öÈý½Çº¯Êý¡£Èý½Çº¯Êý¶¼ÊdzõµÈº¯Êý ...

¶àлÄúµÄ°ïÖú£¡ÎÒÈ¥Ñо¿ÏÂ

[ ·¢×ÔÊÖ»ú°æ http://muchong.com/3g ]
6Â¥2014-10-15 10:09:39
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

bloomi

гæ (³õÈëÎÄ̳)

ÒýÓûØÌû:
4Â¥: Originally posted by ´÷¸Ö¿øµÄÖíÍ· at 2014-10-14 15:48:59
·Ö¶Îº¯Êý×îС¶þ³ËÄâºÏÄ¿±êº¯Êýµ¼Êý²»Á¬Ðø£¬¿É²ÉÓÃÁ½¶Îº¯ÊýµÄ¼ÓȨ¼ÓºÍ×÷ΪÄâºÏÄ£ÐÍ¡£¼ÓȨÒò×Ó¼ÙÉè·Ö±ðΪaºÍb£¬¿ÉÉè¼ÆÁ¬Ðø¹â»¬º¯Êý×÷Ϊ¼ÓȨÒò×Ó¡£Õâ¸öº¯ÊýÐèÒª±íÏÖ³ö½×Ô½ÐÔ£¬¿É²ÉÓÃij¸öÈý½Çº¯Êý¡£Èý½Çº¯Êý¶¼ÊdzõµÈº¯Êý ...

ÎʸöÎÊÌâ¡£¡£¡£¡°µ±tСÓÚtsʱ£¬a=1£¬b=0£¬·ñÔòa=0£¬b=1¡±
ÔÚÕâÑùµÄÌõ¼þϺ¯Êý»¹ÄÜÁ¬Ðø¹â»¬Â𡣡£¡£
7Â¥2014-10-28 15:53:28
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

´÷¸Ö¿øµÄÖíÍ·

ľ³æ (ÖªÃû×÷¼Ò)

ÒýÓûØÌû:
7Â¥: Originally posted by bloomi at 2014-10-28 15:53:28
ÎʸöÎÊÌâ¡£¡£¡£¡°µ±tСÓÚtsʱ£¬a=1£¬b=0£¬·ñÔòa=0£¬b=1¡±
ÔÚÕâÑùµÄÌõ¼þϺ¯Êý»¹ÄÜÁ¬Ðø¹â»¬Â𡣡£¡£...

2/pi*arctan(w*x)£¬xÊÇʵÑé²ÎÊý£¨×Ô±äÁ¿£©£¬wÊÇÒ»¸öÒò×Ó£¬Ô½´ó½×Ô½ÐÔԽǿ£¬¿ÉÒÔ×ÔÐиø³ö£¬¾¡Á¿Ëõ¶Ìת»»´ø¡£Äã×Ô¼ºÈ¥»­£¬ÔÙÀ´ËµÁ¬²»Á¬Ðø£¬¿É²»¿Éµ¼¡£Õâ¸öº¯Êý´Ó-1½×Ô½µ½1£¨»¹ÊÇÓÐת»»´øµÄ£¬µ«¿ÉÒÔÈËΪʹ֮Ëõ¶Ìµ½Ô¶Ð¡ÓÚ²ÉÑù¼ä¸ô£©¡£ÖÁÓÚÔõÑù½×Ô½µ½0£¬×Ô¼ºÈ¥Ï룬±ðÔÙÎÊÎÒÁË¡£

[ ·¢×ÔÊÖ»ú°æ http://muchong.com/3g ]
8Â¥2014-10-28 17:39:50
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ bloomi µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 296Çóµ÷¼Á +3 www_q 2026-03-20 3/150 2026-03-21 16:47 by barlinike
[¿¼ÑÐ] 266Çóµ÷¼Á +3 ÍÛºôºßºôºß 2026-03-20 3/150 2026-03-21 16:46 by barlinike
[¿¼ÑÐ] Çóµ÷¼Á +3 .m.. 2026-03-21 4/200 2026-03-21 16:25 by barlinike
[¿¼ÑÐ] ²ÄÁÏѧ˶301·ÖÇóµ÷¼Á +4 Liyouyumairs 2026-03-21 4/200 2026-03-21 16:01 by 18337163304
[¿¼ÑÐ] 265Çóµ÷¼Á +12 ÁºÁºÐ£Ð£ 2026-03-19 14/700 2026-03-21 13:38 by lature00
[¿¼ÑÐ] ²ÄÁÏѧѧ˶080502 337Çóµ÷¼Á-Ò»Ö¾Ô¸»ªÖпƼ¼´óѧ +4 ˳˳˳mr 2026-03-18 5/250 2026-03-21 10:22 by luoyongfeng
[¿¼ÑÐ] 070300»¯Ñ§319Çóµ÷¼Á +7 ½õÀð0909 2026-03-17 7/350 2026-03-21 03:46 by JourneyLucky
[¿¼ÑÐ] 301Çóµ÷¼Á +10 yyÒªÉϰ¶Ñ½ 2026-03-17 10/500 2026-03-21 03:14 by JourneyLucky
[¿¼ÑÐ] 324·Ö 085600²ÄÁÏ»¯¹¤Çóµ÷¼Á +4 llllkkkhh 2026-03-18 4/200 2026-03-21 01:24 by JourneyLucky
[¿¼ÑÐ] ÄϾ©´óѧ»¯Ñ§376Çóµ÷¼Á +3 hisfailed 2026-03-19 6/300 2026-03-20 23:43 by hisfailed
[¿¼ÑÐ] 304Çóµ÷¼Á +7 ˾¿Õ. 2026-03-18 7/350 2026-03-20 23:08 by JourneyLucky
[¿¼ÑÐ] ¿¼Ñе÷¼ÁÇóÑ§Ð£ÍÆ¼ö +3 ²®ÀÖ29 2026-03-18 5/250 2026-03-20 22:59 by JourneyLucky
[¿¼ÑÐ] Ò»Ö¾Ô¸Î÷ÄϽ»Í¨ ר˶ ²ÄÁÏ355 ±¾¿ÆË«·Ç Çóµ÷¼Á +5 Î÷ÄϽ»Í¨×¨²Ä355 2026-03-19 5/250 2026-03-20 21:10 by JourneyLucky
[¿¼ÑÐ] 353Çóµ÷¼Á +3 À­¹³²»Ðí±ä 2026-03-20 3/150 2026-03-20 19:56 by JourneyLucky
[¿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] ±¾¿ÆÖ£ÖÝ´óѧÎïÀíѧԺ£¬Ò»Ö¾Ô¸»ª¿Æ070200ѧ˶£¬346Çóµ÷¼Á +4 ÎÒ²»ÊÇÒ»¸ù´Ð 2026-03-18 4/200 2026-03-19 09:11 by ¸¡ÔÆ166
[¿¼ÑÐ] ÉúÎïѧ071000 329·ÖÇóµ÷¼Á +3 ÎÒ°®ÉúÎïÉúÎﰮΠ2026-03-17 3/150 2026-03-18 10:12 by macy2011
[¿¼ÑÐ] 0703»¯Ñ§336·ÖÇóµ÷¼Á +6 zbzihdhd 2026-03-15 7/350 2026-03-18 09:53 by zhukairuo
[¿¼ÑÐ] 283Çóµ÷¼Á +3 Ìý·ç¾ÍÊÇÓꣻ 2026-03-16 3/150 2026-03-17 07:41 by ÈÈÇéɳĮ
[¿¼ÑÐ] 327Çóµ÷¼Á +6 ʰ¹âÈÎȾ 2026-03-15 11/550 2026-03-15 22:47 by ʰ¹âÈÎȾ
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û