- 'Plot' function: https://www.mathworks.com/help/matlab/ref/plot.html
- 'Nyquist' function: https://www.mathworks.com/help/control/ref/dynamicsystem.nyquist.html
Nyquist diagram, Limit cycle - Diagrama de Nyquist, Ciclo límite
2 visualizzazioni (ultimi 30 giorni)
Mostra commenti meno recenti
Good morning, from the following data, how would you go about drawing the Nyquist graph that is observed? Thank you very much.
Buenos días, a partir de los siguientes datos ¿cómo se haría para sacar la gráfica de Nyquist que se observa? Muchas gracias.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/988185/image.jpeg)
0 Commenti
Risposte (1)
Balavignesh
il 27 Set 2023
Hi Jesus,
As per my understanding, you would like to find the Nyquist plot of the Transfer function
G1(s) = 4/((s^0.7)*(s+1)^2).
You might have tried using the 'nyquist' function to get the Nyquist plot but encountered some errors on your end. It looks like the transfer function '1/s^0.7' is not directly compatible with the 'nyquist' function in MATLAB because the exponent of 0.7 is not a valid transfer function power.
I suggest you take a numerical approach to approximate the 'nyquist' plot for the transfer function by defining a frequency range for evaluation.
Here is an example showing how you can do it:
close all;
% Frequency Range for evaluation
w = logspace(-3,3,1000);
% Complex Frequency
s = 1i*w;
% Transfer Function
G = 4./((s.^0.7).*(s+1).^2);
% Plotting the Nyquist plot numerically
figure;
plot(real(G) , imag(G));
xlim([-1 0]);
ylim([-0.15 0.1]);
title('Approximated Nyquist Plot');
xlabel('Real Axis');
ylabel('Imaginary Axis');
grid on
Please refer to the following documentation links to know more about
0 Commenti
Vedere anche
Prodotti
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!