How to plot a bode graph
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I need to plot a bode graph. I have values for the frequency, magnitude and phase but how do I then put them on a bode diagram?
回答（3 个）
Rahul K
2017-2-22
0 个投票
Star Strider
2017-2-22
Use the subplot function:
figure(1)
subplot(2,1,1)
plot(frequency, magnitude)
grid
xlabel('Frequency (Hz)')
ylabel('Magnitude')
subplot(2,1,2)
plot(frequency, phase)
grid
xlabel('Frequency (Hz)')
ylabel('Phase')
Caitlin Jarvis
2017-4-30
0 个投票
if you have the transfer function than you can enter it in and plot directly from that.
for example for (2s^2+4s+1)/(s+1) where s=jw, you enter the transfer function like this:
G=tf([2,4,1],[1,1])
and then plot using: bode(G)
1 个评论
Star Strider
2017-4-30
Quoting the original post:
‘I have values for the frequency, magnitude and phase but how do I then put them on a bode diagram?’
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