shiyu.asv

详细介绍matlab（信号与系统）的基本用法

%时域分析
%利用卷积求零状态响应
t=0:0.01:1
h=exp(-1*t)  %generates h(k)
e=1*t  %generates x(k)
r=0.01*conv(e,h)  %caculate r(k)=T*h(k)*e(k)
plot(t,r(1:101),'+')
axis([0,1,0,0.4])

%冲激响应
%step
clc
clear
num=1
den=[1 1 1 0]
[z,p]=tf2zp(num,den)
zplane(z,p)
pause
t=1:0.1:30
%绘制闭环系统的脉冲激励响应曲线
y=impulse(num,den,t)
plot(t,y)
title('The impluse responce')
xlabel('time-sec')

%阶跃响应
clc
clear
num=7
den=[3 4 6 9]
t=0:0.01:40;
step(num, den, t);