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youyouxiong

гæ (СÓÐÃûÆø)

[ÇóÖú] matlab¸ßÈ˰￴¿´Õâ¸ö³ÌÐò

matlab²ËÄñ£¬¶ÔÕâ¶«Î÷Õæ²»¶®°¡£¬Çë½Ì¸÷λ¸ßÊÖ
ÔõÑùÓÃmatlab±àÁ˸ö¼ÆËã³ÌÐò£¬ÄÜÔËÐУ¬µ«ÊǺͼÆË㹫ʽÓвîÒ죬¸ßÊÖ°ï¿´¿´ÎÊÌâÔÚÄÄ£¬¸½¼þÊÇÓ¦¸ÃµÃµ½Í¼ÏßÐÎʽ
timeg=1.65

n=95;                           %selected  points
voltage=[0.65637
0.34749
0
4.51737
9.65251
13.16602
18.30116
23.74517
28.26255
34.32432
38.49421
42.66409
45.90734
50.3861
54.55598
58.72587
61.9305
65.44402
68.33977
71.89189
75.40541
77.64479
79.26641
76.67954
74.13127
71.23552
73.4749
76.67954
79.88417
84.71042
86.94981
88.22394
85.67568
89.84556
87.60618
86.29344
84.40154
82.12355
85.98456
84.71042
86.64093
88.57143
90.15444
92.08494
91.42857
89.84556
87.25869
90.81081
91.11969
89.53668
88.57143
86.94981
85.01931
86.29344
88.57143
91.42857
88.22394
85.98456
83.43629
80.23166
77.64479
74.44015
70.92664
67.72201
63.51351
57.76062
53.89961
51.00386
46.5251
42.04633
35.63707
31.46718
25.98456
21.50579
15.71429
9.30502
6.10039
2.58687
0.34749
-0.30888
0
2.89575
4.51737
2.58687
0.65637
0.34749
0
0.34749
3.55212
8.03089
11.23552
15.09653
18.30116
22.77992
25.67568];

%integration
pressure=voltage;
timemm=0:timegn-1)*timeg;
integfunction=pressure;
pressure(1)=0;
for i=1n-1)
    xx=[timemm(i),timemm(i+1)];
    s=[i-1,i]
    ff=[integfunction(i)*sin(7426.067244*(i-s)),integfunction(i+1)*sin(7426.067244*(i+1-s-1))];
    pp=spline(xx,ff);
    int_pp=fnint(pp);
    pressure(i+1)=ppval(int_pp,[timemm(i),timemm(i+1)])*[-1;1];
end
for i=1n-1)
    pressure(i+1)=pressure(i)+pressure(i+1);
end        
plot(timemm,pressure);
grid on

1


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youyouxiong

гæ (СÓÐÃûÆø)

ÕýÈ·µÄͼӦ¸ÃÊÇͼ2£¬Í¼1ÊÇvoltage
2Â¥2012-07-08 14:48:10
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

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гæ (³õÈëÎÄ̳)

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³ôË®¹µ: ½ð±Ò+1, лл½»Á÷~~ 2012-07-09 21:23:31
ÄãµÄ³ÌÐò±àÖÆÃ»ÓÐÂß¼­ÎÊÌ⣬Ҫ½â¾öÎÊÌâÄãµÄ¹«Ê½ÐèÒªÌù³öÀ´¡£
3Â¥2012-07-09 19:22:11
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

Moon8808

ľ³æ (ÖøÃûдÊÖ)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
xiegangmai: ½ð±Ò+2, лл²ÎÓ룡 2012-08-09 22:42:35
youyouxiong: ½ð±Ò+5, ¡ïÓаïÖú 2012-08-09 22:49:13
timeg=1.65;w=7426.067244;
timemm=0:timegn-1)*timeg;
for ii=1:n
     tt=timeg*(ii-1);
     integfunction(ii)=(2*sin((tt*w)/2)^2)/w*p(ii);
     K(ii)=sum(integfunction(1:ii));
end
plot(timemm,K)
4Â¥2012-08-09 22:37:22
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
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