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function [wpos,ypos]=rlasymp(G) G=zpk(G); zer=G.z{1}; pol=G.p{1}; gain=G.k; ii=find(abs(zer)0, zer=zer(ii); end nExcess=length(pol)-length(zer); if nExcess>0 pp=(sum

function [h1,h2]=mncirc(M,N) if nargin==1, N=[1/3,1/4,1/6,1/12]*pi; N=[-N(length(N):-1:1),N]; elseif nargin==0 M=[1.3,1.4,1.5,2,3]; M=[M, 1./M]; N=[1/3,1/4,1/6,1/12]*pi; N=[-

例7-30 Fourier变换的实现。 解：在命令窗口中输入如下命令，并按Enter键确认。 >> syms t v w x >> fourier(1/t) ans = i*pi*(Heaviside(-w)-Heaviside(w)) >> fourier(exp(-x^2),x,t) ans = pi^(1/2)*exp(-1/4*t^2) >> fourier(exp(-

x = 0:pi/5:2*pi; y = sin(x); plot(x,y); hold on y1 = interpft(y,20); x1=linspace(0,2*pi,20); plot(x1,y1,'.');

>> a=1;b=2;c=sqrt(3); >> cos_alpha = (a^2 + b^2 -c^2) / (2*a*b) >> alpha=acos(cos_alpha) >> alpha=alpha*180/pi >> clear alpha; >> alpha=acosd(cos_alpha)

>> t=0:pi/20:2*pi; >> z=sin(t); >> plot(t,z) >> set(gca,'YAxisLocation','right') >> xlabel('t') >> ylabel('z')

>> t = 0:pi/6:4*pi; >> [x,y,z] = cylinder(4+cos(t),30); >> surf(x,y,z),title('default axis'); >> axis square,title('axis square'); >> axis equal,title('axis equal');

function wr = wt2(dat,c,pmn,pmx,m) % The function WT2 generates a 2-D Morlet Wavelet Transform % of data dat(n,1), where n specifies the length of time series % and it must be even. % % The out

%-------------------------------------------------------------------------- % Copyright (C) Darius Plausinaitis % Written by Darius Plausinaitis %---------------------------------------------------

clear clc %正弦干扰陷波器 %定义信号长度M，幅度A M=1000; n0=1:M;%时间序列 A=5; N=100; %生成噪声信号 v=(rand(1,M)-0.5)*2; %产生正弦信号 s=sin(0.5*(1:M)); Pv=1^2/3; Ps=10*Pv; %产生正弦信号 Pss=sum(s.^2)/M; A=sqrt(Ps/Pss); s=