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brqhl_ing

Òø³æ (СÓÐÃûÆø)

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brqhl_ing

Òø³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
Originally posted by lijinfeng042 at 2010-05-29 11:42:44:

°´¶¨ÒåÀ´°¡ ºÇºÇ

Ö±½Ó
syms x y
dx=10*£¨y-x£©;
xn=hilbert(dx);
xr=real(xn1)
xi=imag(xn1)
P=atan2(xi,xr)%
ÕâÑùÐÐÂð£¿
ÔËÐкó³öÏÖ£ºsyms x y
>> dx=10*(y-x);
>> xn=hilbert(dx);
xr=real(xn1);
xi=imag(xn1);
P=atan2(xi,xr);
Warning: HILBERT ignores imaginary part of input.
> In hilbert at 39
??? Function 'fft' is not defined for values of class 'sym'.

Error in ==> fft at 36
  [varargout{1:nargout}] = builtin('fft', varargin{:});

Error in ==> hilbert at 47
x = fft(xr,n,1); % n-point FFT over columns.
7Â¥2010-05-29 14:44:06
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 23 ¸ö»Ø´ð

brqhl_ing

Òø³æ (СÓÐÃûÆø)

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2Â¥2010-05-28 10:12:30
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

brqhl_ing

Òø³æ (СÓÐÃûÆø)

ÎØÎØ£¬´«ËµÖеĸßÊÖÄØ£¡£¡
3Â¥2010-05-28 15:21:18
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

lijinfeng042

ľ³æ (СÓÐÃûÆø)

Matlab

¡ï ¡ï ¡ï
brqhl_ing(½ð±Ò+1):лл²ÎÓë
adu886886(½ð±Ò+2):ллָµ¼ 2010-05-28 19:55:47
brqhl_ing(½ð±Ò+4): 2010-05-29 08:26:30
ÒýÓûØÌû:
Originally posted by brqhl_ing at 2010-05-28 08:44:56:
Çë½Ì¸ßÊÖһϰ¡£¬ÈçºÎÔÚmatlabÖÐÀûÓÃÏ£¶û²®Ìر任À´¶¨ÒåÏàλ£¡×îºÃ¾Ù¸ö¼òµ¥µÄÀý×Ó£¡Íò·Ö¸Ðл£¡£¡

¸ù¾Ý¶¨Òå°¡
Àý×Ó
CODE:
%ÓàÏÒÐźÅ
n=0:512;
Ts=0.0125;
xn=cos(40*pi*n*Ts);
subplot(2,1,1);plot(n,xn);
xlabel('²ÉÑùµãÊýn');ylabel('ԭʼͼÏñx(n)');title('ÓàÏÒÐźÅ')

xn1=hilbert(xn)
xr=real(xn1)
xi=imag(xn1)
P=atan2(xi,xr)%¶¨ÒåÏàλ¾ÍÊÇ·´ÕýÇÐ
subplot(2,1,2);
plot(P)
xlabel('²ÉÑùµãÊýn');ylabel('˲ʱÏàλ')

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4Â¥2010-05-28 18:58:48
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
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