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u'(t)=-a*f1(t)*y(t);
v'(t)=-b*v(t)+a*f1(t)*y(t);
w'(t)=b*v(t);
x'(t)=-a*f2(t)*v(t)+a*f1(t)*y(t)+a*f3(t)*y(t)+c*y(t);
y'(t)= a*f2(t)*v(t) - a*f1(t)*y(t) - a*f3(t)*y(t) - c*y(t);

ÆäÖР f1(t)=0 if u(t)=0
                 =1 if u(t)>0;
         f2(t)=0 if x(t)=0
                 =1 if x(t)>0;
          f3(t)=0 if v(t)=0
                 =1 if v(t)>0;
          a=1;b=0.1;c=0.5;
ÇÒu(0)=1000;v(0)=1;w(0)=0;x(0)=200;y(0)=0.ÏÖÔÚÒªµÃµ½¸÷º¯ÊýËætµÄ±ä»¯ÇúÏߣ¬Èç¹û΢·Ö·½³Ì×éÖÐûÓÐf1(t)£¬f2(t)£¬f2(t)ÕâÈý¸ö·½³Ì£¬ÄÇôÔÚmatlabÖпÉÒÔÖ±½ÓÓÃodeÀ´µÃµ½£¬µ«ÊÇÏÖÔÚÓÐÕâÈý¸ö·½³Ì£¬ÎÒ¾Íû°ì·¨ÁË£¬ÊÔÁ˺ü¸ÖÖ·½·¨¶¼Ã»ÓÃ,ÏëÇë½Ì¸÷λ¸ßÊÖ£¬ÔÚmatlabÏÂÔõô²ÅÄÜÇó½âÕâ¸ö·½³Ì£¿

[ Last edited by ybnav on 2011-3-11 at 22:27 ]
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ybnav

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ÒýÓûØÌû:
Originally posted by xiegangmai at 2011-03-11 15:42:54:
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u'(t)=-f1(t)*y(t);
v'(t)=-0.1*v(t)+f1(t)*y(t);
w'(t)=0.1*v(t);
x'(t)=-f2(t)*v(t)+f1(t)*y(t)+f3(t)*y(t)+0.5*y(t);
y'(t)= f2(t)*v(t) -f1(t)*y(t) -f3(t)*y(t) -0.5*y(t);

ÆäÖР f1(t)=0 if u(t)=0
                =1 if u(t)>0;
         f2(t)=0 if x(t)=0
                 =1 if x(t)>0;
          f3(t)=0 if v(t)=0
                 =1 if v(t)>0;
ÇÒu(0)=1000;v(0)=1;w(0)=0;x(0)=200;y(0)=0.

Ö»ÒªÇóÔÚmatlabÖл­³öu(t)¡¢v(t)¡¢w(t)¡¢x(t)¡¢y(t)ÔÚtµÄijһ¶ÎÇø¼äÄÚ£¬±ÈÈç[0,60]µÄÇúÏßͼ£¬»¹ÊÇûÏë³öÀ´¸ÄÔõô°ì£¬Í¬Ñ§Ëµ¿ÉÄÜÐèÒªµü´ú£¬ÎÒÒ²²»ÖªµÀÔõô°ì£¬Íò·Ö¸Ðл°æÖ÷ͬ־£¡

[ Last edited by ybnav on 2011-3-11 at 22:31 ]
4Â¥2011-03-11 17:33:08
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xiegangmai

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Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû½»Á÷
ÒýÓûØÌû:
Originally posted by ybnav at 2011-03-11 13:18:24:
Ïò¸÷λ´óÏÀÇóÖúmatlabÇó½â΢·Ö·½³Ì×éÓöµ½µÄÒ»¸öÎÊÌ⣺
¼ÙÉèÓÐÒÔϵÄ΢·Ö·½³Ì×é

u'(t)=-a*f1(t)*z(t);
v'(t)=-b*v(t)+a*f1(t)*z(t);
w'(t)=b*v(t);
x'(t)=-a*f2(t)*v(t)+a*f1(t)*y(t)+a*f3(t)*y(t)+c*y(t); ...

°ÑÄãµÄº¯ÊýÌù³öÀ´£¬ÎÒÉԸĸľͿÉÒÔÇó½âÁË¡£

»òÕ߲ο¼£ºhttp://muchong.com/bbs/viewthread.php?tid=2764636###

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2Â¥2011-03-11 15:42:54
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ybnav

Òø³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
Originally posted by xiegangmai at 2011-03-11 15:42:54:
°ÑÄãµÄº¯ÊýÌù³öÀ´£¬ÎÒÉԸĸľͿÉÒÔÇó½âÁË¡£

»òÕ߲ο¼£ºhttp://muchong.com/bbs/viewthread.php?tid=2764636###

°Ñ΢·Ö·½³Ìд³É·Ö¶Îº¯ÊýµÄÐÎʽ¼´¿É¡£

¾ÍÊÇÕâ¸ö΢·Ö·½³Ì×é
u'(t)=-*f1(t)*y(t);
v'(t)=-0.1*v(t)+*f1(t)*y(t);
w'(t)=0.1*v(t);
x'(t)=-f2(t)*v(t)+f1(t)*y(t)+f3(t)*y(t)+0.5*y(t);
y'(t)= f2(t)*v(t) -f1(t)*y(t) -f3(t)*y(t) -0.5*y(t);

ÆäÖР f1(t)=0 if u(t)=0
                =1 if u(t)>0;
         f2(t)=0 if x(t)=0
                 =1 if x(t)>0;
          f3(t)=0 if v(t)=0
                 =1 if v(t)>0;
ÇÒu(0)=1000;v(0)=1;w(0)=0;x(0)=200;y(0)=0.

Ö»ÒªÇóÔÚmatlabÖл­³öu(t)¡¢v(t)¡¢w(t)¡¢x(t)¡¢y(t)ÔÚtµÄijһ¶ÎÇø¼äÄÚ£¬±ÈÈç[0,60]µÄÇúÏßͼ£¬»¹ÊÇûÏë³öÀ´¸ÄÔõô°ì£¬Í¬Ñ§Ëµ¿ÉÄÜÐèÒªµü´ú£¬ÎÒÒ²²»ÖªµÀÔõô°ì£¬Íò·Ö¸Ðл°æÖ÷ͬ־£¡

[ Last edited by ybnav on 2011-3-11 at 22:28 ]
3Â¥2011-03-11 17:31:40
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

xiegangmai

°æÖ÷ (Ö°Òµ×÷¼Ò)

ÎÒûͷÏÎ

ÓÅÐã°æÖ÷ÓÅÐã°æÖ÷ÓÅÐã°æÖ÷

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Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû½»Á÷
ÒýÓûØÌû:
Originally posted by ybnav at 2011-03-11 17:33:08:
¸Õ·½³Ìд´íÁË£¬Ó¦¸ÃÊÇ

¾ÍÊÇÕâ¸ö΢·Ö·½³Ì×é
u'(t)=-f1(t)*z(t);
v'(t)=-0.1*v(t)+f1(t)*z(t);
w'(t)=0.1*v(t);
x'(t)=-f2(t)*v(t)+f1(t)*y(t)+f3(t)*y(t)+0.5*y(t);
y'(t)= f2(t)*v(t) -f1(t)*y(t) -f3( ...

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