多输入多输出系统已知状态方程如何画频响函数图
多输入多输出系统已知状态方程如何画频响函数图。KM=inv(M)*K ; %动力矩阵
=eig(KM); %求解特征值 和特征向量
f=sqrt(W2)/(2*pi); %固有频率
m1=eye(7);
CM=inv(M)*C;
m0=zeros(7,7);
m01=zeros(1,7);
A=;
B=[0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
1/1105*2*(kqz+khz) 1/1105*2*(cqz+chz)
0 0
0 0
0 0
0 0];
% =freqz(A,B)
C=[1 0 0 0 0 0 0 0 0 0 0 0 0 0
0 1 0 0 0 0 0 0 0 0 0 0 0 0
0 0 1 0 0 0 0 0 0 0 0 0 0 0
0 0 0 1 0 0 0 0 0 0 0 0 0 0
0 0 0 0 1 0 0 0 0 0 0 0 0 0
0 0 0 0 0 1 0 0 0 0 0 0 0 0
0 0 0 0 0 0 1 0 0 0 0 0 0 0];
D=0;
help freqresp, bode
& ref
Frequency Domain Analysis
allmargin All crossover frequencies and corresponding stability margins
bode Bode diagram of frequency response
bodemag Bode magnitude response of LTI models
db2mag Convert decibels (dB) to magnitude
evalfr Evaluate frequency response at given frequency
freqresp Frequency response over frequency grid
mag2db Convert magnitude to decibels (dB)
margin Gain and phase margins and associated crossover frequencies
nichols Nichols plot of LTI models
nyquist Nyquist plot of LTI models
sigma Plot singular values of LTI models
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