±±¾©Ê¯ÓÍ»¯¹¤Ñ§Ôº2026ÄêÑо¿ÉúÕÐÉú½ÓÊÕµ÷¼Á¹«¸æ
²é¿´: 3916  |  »Ø¸´: 89
¡¾½±Àø¡¿ ±¾Ìû±»ÆÀ¼Û74´Î£¬×÷Õßold_yangÔö¼Ó½ð±Ò 59.8 ¸ö

old_yang

Ìú¸Ëľ³æ (ÖøÃûдÊÖ)


[×ÊÔ´] Å£½ò----·ÇÏßÐÔÆÕͨ΢·Ö·½³Ì--µÚ4°æ--Nonlinear Ordinary Differential Equation

1 Second-order differential equations in the phase plane 1
1.1 Phase diagram for the pendulum equation 1
1.2 Autonomous equations in the phase plane 5
1.3 Mechanical analogy for the conservative system¡§x = f(x) 14
1.4 The damped linear oscillator 21
1.5 Nonlinear damping: limit cycles 25
1.6 Some applications 32
1.7 Parameter-dependent conservative systems 37
1.8 Graphical representation of solutions 40
Problems 42

2 Plane autonomous systems and linearization

4 Periodic solutions; averaging methods 125
4.1 An energy-balance method for limit cycles 125
4.2 Amplitude and frequency estimates: polar coordinates 130
4.3 An averaging method for spiral phase paths 134
4.4 Periodic solutions: harmonic balance 138
4.5 The equivalent linear equation by harmonic balance 140
Problems 143

5 Perturbation methods 149
5.1 Nonautonomous systems: forced oscillations 149
5.2 The direct perturbation method for the undamped Duffing¡¯s equation 153
5.3 Forced oscillations far from resonance 155
5.4 Forced oscillations near resonance with weak excitation 157
5.5 The amplitude equation for the undamped pendulum 159
5.6 The amplitude equation for a damped pendulum 163
5.7 Soft and hard springs 164
5.8 Amplitude¨Cphase perturbation for the pendulum equation 167
5.9 Periodic solutions of autonomous equations (Lindstedt¡¯s method) 169
5.10 Forced oscillation of a self-excited equation 171
5.11 The perturbation method and Fourier series 173
5.12 Homoclinic bifurcation: an example 175
Problems 179

8 Stability 259
8.1 Poincar¨¦ stability (stability of paths) 260
8.2 Paths and solution curves for general systems 265
8.3 Stability of time solutions: Liapunov stability 267
8.4 Liapunov stability of plane autonomous linear systems 271
8.5 Structure of the solutions ofn-dimensional linear systems 274
8.6 Structure ofn-dimensional inhomogeneous linear systems 279
8.7 Stability and boundedness for linear systems 283
8.8 Stability of linear systems with constant coefficients 284
8.9 Linear approximation at equilibrium points for first-order systems in n variables 289
8.10 Stability of a class of non-autonomous linear systems inn dimensions 293
8.11 Stability of the zero solutions of nearly linear systems 298
Problems 300
»Ø¸´´ËÂ¥

» ±¾Ìû¸½¼þ×ÊÔ´Áбí

  • »¶Ó­¼à¶½ºÍ·´À¡£ºÐ¡Ä¾³æ½öÌṩ½»Á÷ƽ̨£¬²»¶Ô¸ÃÄÚÈݸºÔð¡£
    ±¾ÄÚÈÝÓÉÓû§×ÔÖ÷·¢²¼£¬Èç¹ûÆäÄÚÈÝÉæ¼°µ½ÖªÊ¶²úȨÎÊÌ⣬ÆäÔðÈÎÔÚÓÚÓû§±¾ÈË£¬Èç¶Ô°æÈ¨ÓÐÒìÒ飬ÇëÁªÏµÓÊÏ䣺xiaomuchong@tal.com
  • ¸½¼þ 1 : diff_equation.pdf
  • 2015-04-13 16:53:21, 6.21 M

» ÊÕ¼±¾ÌûµÄÌÔÌûר¼­ÍƼö

Êé¼®ÏÂÔØÍøÕ¾ רҵÊé¼®£¨ÍâÎİ棩WM רҵÊé¼®Ö®ÊýѧÁ¦Ñ§WM ¼ÆËãÊýѧÓë¾­¼Ãͳ¼Æ
uicorn3 ×ÔÈ»¿ÆÑ§ ÊýѧorÏà¹Ø ÎÒÏëÒªµÄ
ͼÊé

» ±¾ÌûÒÑ»ñµÃµÄºì»¨£¨×îÐÂ10¶ä£©

» ²ÂÄãϲ»¶

» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
»ØÌûÖ§³Ö ( ÏÔʾ֧³Ö¶È×î¸ßµÄǰ 50 Ãû )

ÄäÃû

Óû§×¢Ïú (ÕýʽдÊÖ)


±¾Ìû½öÂ¥Ö÷¿É¼û
2Â¥2015-04-13 18:21:05
ÒÑÔÄ   ÉêÇëÊýѧEPI   »Ø¸´´ËÂ¥   ±à¼­   ²é¿´ÎÒµÄÖ÷Ò³
¸Ðл·ÖÏí×ÊÔ´
5Â¥2015-04-13 19:50:46
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

smiletian

Ìú¸Ëľ³æ (Ö°Òµ×÷¼Ò)


¡ï¡ï¡ï¡ï¡ï ÎåÐǼ¶,ÓÅÐãÍÆ¼ö

Õ⺺Óï·­ÒëµÄ¡£
32Â¥2015-04-15 16:26:43
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

sltj

½ð³æ (ÕýʽдÊÖ)


¡ï¡ï¡ï¡ï¡ï ÎåÐǼ¶,ÓÅÐãÍÆ¼ö

¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
лл¥Ö÷£¬ÔÞ£¡
43Â¥2015-04-16 14:46:37
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
¼òµ¥»Ø¸´
tryhard3Â¥
2015-04-13 19:18   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
hylpy4Â¥
2015-04-13 19:50   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
wangth09216Â¥
2015-04-13 21:20   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
tianwk7Â¥
2015-04-14 00:38   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
Quan.8Â¥
2015-04-14 05:48   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
anmingkang9Â¥
2015-04-14 08:52   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
archdevil10Â¥
2015-04-14 09:46   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
2015-04-14 10:24   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
75287929012Â¥
2015-04-14 10:52   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
luhonglin13Â¥
2015-04-14 12:22   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
askuyue14Â¥
2015-04-14 13:24   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
ºìÄñ15Â¥
2015-04-14 14:22   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
dkakashi16Â¥
2015-04-14 14:59   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
efoxxx17Â¥
2015-04-14 15:17   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
lingsx18Â¥
2015-04-14 17:21   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
ha166819Â¥
2015-04-14 17:51   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
daijzh20Â¥
2015-04-14 18:22   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
gxqh21Â¥
2015-04-15 01:17   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
laozhu55722Â¥
2015-04-15 01:44   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
zym100323Â¥
2015-04-15 07:56   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
lbsylh24Â¥
2015-04-15 08:01   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
kuangpan25Â¥
2015-04-15 08:36   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
crayoon26Â¥
2015-04-15 08:44   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
qibiaoli27Â¥
2015-04-15 09:40   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
licro28Â¥
2015-04-15 11:31   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
yankee31829Â¥
2015-04-15 12:17   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
yuanbing30Â¥
2015-04-15 13:12   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
supervb31Â¥
2015-04-15 15:39   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
1093133Â¥
2015-04-15 16:50   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
deen34Â¥
2015-04-15 18:34   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
wwwhww35Â¥
2015-04-15 19:45   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
tryhard36Â¥
2015-04-15 20:28   »Ø¸´  
¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
wanghl531137Â¥
2015-04-15 22:36   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
nihaoweiming38Â¥
2015-04-15 22:37   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
viskanta39Â¥
2015-04-15 23:53   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
peterflyer40Â¥
2015-04-16 06:54   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
fingerlake41Â¥
2015-04-16 10:07   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
fyq9842Â¥
2015-04-16 11:13   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
zhchzhsh207644Â¥
2015-04-16 16:13   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
zengjingok45Â¥
2015-04-16 18:05   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
kejia46Â¥
2015-04-16 22:00   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
baiplf47Â¥
2015-04-17 07:02   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
2015-04-26 21:24   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
yteducation49Â¥
2015-05-01 22:00   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
ÀÊÈóking50Â¥
2015-05-04 23:34   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ old_yang µÄÖ÷Ìâ¸üÐÂ
¡î ÎÞÐǼ¶ ¡ï Ò»ÐǼ¶ ¡ï¡ï¡ï ÈýÐǼ¶ ¡ï¡ï¡ï¡ï¡ï ÎåÐǼ¶
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 085600 286·Ö ²ÄÁÏÇóµ÷¼Á +8 ÂéÀ±öÏÓã 2026-03-27 9/450 2026-03-29 15:36 by Serene1974
[¿¼ÑÐ] Ò»Ö¾Ô¸Äϲý´óѧ324Çóµ÷¼Á +4 hanamiko 2026-03-29 4/200 2026-03-29 15:23 by ÌÆãå¶ù
[¿¼ÑÐ] Çóµ÷¼Á +4 Çà´º²ÃΪÈý½Ø 2026-03-29 4/200 2026-03-29 15:01 by ÌÆãå¶ù
[¿¼ÑÐ] »¯Ñ§¹¤³Ì085602 305·ÖÇóµ÷¼Á +18 RichLi_ 2026-03-25 18/900 2026-03-29 14:55 by ÌÆãå¶ù
[¿¼ÑÐ] Ò»Ö¾Ô¸£ºÎ÷±±´óѧ£¬Ó¢Ò»ÊýÒ»408-284·ÖÇóµ÷¼Á +4 12.27 2026-03-27 4/200 2026-03-29 14:40 by zhshch
[¿¼ÑÐ] 329Çóµ÷¼Á +7 ÐÇÒ°? 2026-03-26 7/350 2026-03-29 06:43 by 544594351
[¿¼ÑÐ] һ־Ը̫ԭÀí¹¤°²È«¹¤³Ì300·Ö£¬Çóµ÷¼Á +5 0857Çóµ÷¼Á. 2026-03-24 6/300 2026-03-28 22:04 by zhq0425
[¿¼ÑÐ] 347Çóµ÷¼Á +3 ɽ¶¥¼û¦Á 2026-03-25 3/150 2026-03-28 14:13 by ÌÆãå¶ù
[¿¼ÑÐ] 0703Ò»Ö¾Ô¸9£¬³õÊԳɼ¨£º338£¬ËÄÁù¼¶Òѹý£¬ÓпÆÑо­Àú£¬Çóµ÷¼Á£¡ +4 Zuhui0306 2026-03-25 4/200 2026-03-28 13:07 by ÌÆãå¶ù
[¿¼ÑÐ] 291Çóµ÷¼Á +15 hhhhxn.. 2026-03-23 21/1050 2026-03-28 11:26 by self2008
[¿¼ÑÐ] 081200-314 +3 LILIQQ 2026-03-27 4/200 2026-03-28 09:41 by ±£»¤µØÇòÄãÎÒ×öÆ
[¿¼ÑÐ] 085405 ¿¼µÄ11408Çó¸÷λÀÏʦ´ø×ß +3 Qiuѧing 2026-03-28 3/150 2026-03-28 09:19 by ÀֺǺǵÄ×·ÃÎÈË
[¿¼ÑÐ] ¸´ÊÔµ÷¼Á£¬Ò»Ö¾Ô¸ÄÏÅ©083200ʳƷ¿ÆÑ§Ó빤³Ì +5 XQTJZ 2026-03-26 5/250 2026-03-27 14:49 by ¿ñìÅÂóµ±µ±
[¿¼ÑÐ] 276Çóµ÷¼Á¡£ÓаëÄêµç³ØºÍ°ëÄê¸ß·Ö×Óʵϰ¾­Àú +10 ²ÄÁÏѧ257Çóµ÷¼Á 2026-03-23 11/550 2026-03-27 10:13 by YCIT- LHL
[¿¼ÑÐ] 333Çóµ÷¼Á +6 wfh030413@ 2026-03-23 6/300 2026-03-26 22:45 by ѧԱ8dgXkO
[¿¼ÑÐ] 0703»¯Ñ§Çóµ÷¼Á +3 µ¤ÇàÄÌ¸Ç 2026-03-26 5/250 2026-03-26 20:11 by macy2011
[¿¼ÑÐ] 302Çóµ÷¼Á +4 ½õÒÂÎÀÌÙ½· 2026-03-25 4/200 2026-03-25 16:29 by ¹¦·ò·è¿ñ
[¿¼ÑÐ] ¸÷λÀÏʦÄúºÃ£º±¾È˳õÊÔ372·Ö +5 jjÓ¿77 2026-03-25 6/300 2026-03-25 14:15 by mapenggao
[¿¼ÑÐ] 340Çóµ÷¼Á +5 »°Ã·ÌÇ111 2026-03-24 5/250 2026-03-25 06:53 by ilovexiaobin
[¿¼ÑÐ] 277·ÖÇóµ÷¼Á£¬¿çµ÷²ÄÁÏ +3 ¿¼Ñе÷¼Álxh 2026-03-24 3/150 2026-03-24 13:52 by JourneyLucky
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û