实验十八—离散系统的Simulink仿真.doc

of accountability, redress of orders and prohibitions. Strengthening the honesty and self-discipline of leading cadres h模型
仿真命令：
[A,B,C,D]=dlinmod(‘模型文件名’) %求状态空间矩阵。注意：’模型文件名’不含扩展名
dimpulse(A,B,C,D)     %求冲激响应的波形 
dimpulse(A,B,C,D,1,N1:N2)%求k=N1—N2曲线〔步长为1〕的冲激响应 
dimpulse(A,B,C,D,1,N1：:N2)%求冲激响应在k=N1—N2曲线〔步长为〕的部分样值
dstep(A,B,C,D)     %绘制系统阶跃响应的波形 
dstep(A,B,C,D,1,N1: :N2)
dbode(A,B,C,D,Ts)；  %求频率响应〔频率范围：，即〕。Ts为取样周期，一般取Ts=1.
dbode(A,B,C,D,Ts,iu:w0::w1)；%求频率响应〔频率范围：，即，为频率步长〕：iu为系统输入端口的编号，系统只有一个输入端口时取iu=1.
以上命令，可以逐条在MATLAB命令窗口输入、执行，也可编写成M文件并运行，获得所需结果
of accountability, redress of orders and prohibitions. Strengthening the honesty and self-discipline of leading cadres honesty in politics and education work, enhance leaders ability to resist
of accountability, redress of orders and prohibitions. Strengthening the honesty and self-discipline of leading cadres honesty in politics and education work, enhance leaders ability to resist
of accountability, redress of orders and prohibitions. Strengthening the honesty and self-discipline of leading cadres honesty in politics and education work, enhance leaders ability to resist
三、实验内容 
1、离散系统时域框图如图18-9所示。建立SIMULINK模型，求其状态空间矩阵、系统函数表达式、冲激响应、阶跃响应和频率特性。
图18-9
系统模型
M文件程序：
syms z
[A,B,C,D]=dlinmod('l18')
I=[1 0;0 1];
H=C*inv(z*I-A)*B+D
figure(6);
subplot(2,1,1);dimpulse(A,B,C,D);grid;
subplot(2,1,2);dstep(A,B,C,D