Hi, I have a question about the Nyquist diagrams.
Say I have a loop function L and its bode plot.
The phase of the function, say, goes from -90° to -270°, so it crosses -180°. I know the magnitude for each point (for example, I plot the bode using Matlab).
Now, I want to use the bode plot to obtain the Nyquist diagram.
I know the Nyquist diagram will cross the begative Re axis at some point.
But how do I know the exact point? In particular, how do I know if it will be more negative with respect to the (-1, 0*j) critical point or if it will be more positive?
If I look at the frequency on the bode I can read the exact magnitude in dB.
What's next?
Say I have a loop function L and its bode plot.
The phase of the function, say, goes from -90° to -270°, so it crosses -180°. I know the magnitude for each point (for example, I plot the bode using Matlab).
Now, I want to use the bode plot to obtain the Nyquist diagram.
I know the Nyquist diagram will cross the begative Re axis at some point.
But how do I know the exact point? In particular, how do I know if it will be more negative with respect to the (-1, 0*j) critical point or if it will be more positive?
If I look at the frequency on the bode I can read the exact magnitude in dB.
What's next?