Using rlocus I am confused

Question

Madyson Davis 2023-3-29

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1937079-using-rlocus-i-am-confused

回答： Paul 2023-3-29

G = tf([1 1], conv([1 2 2], [1 2 5]));
rlocus(G, linspace(-8, 0, 1000), linspace(-10,10,1000))
Error using DynamicSystem/rlocus
Invalid syntax for time or frequency response command. See command help for more information.
title('Root Locus Diagram');
xlabel('Real Axis');
ylabel('Imaginary Axis');

Confused because it keeps giving me the same error and I am wondering if I need to format it differently or something

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Answer 1

Star Strider 2023-3-29

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https://ww2.mathworks.cn/matlabcentral/answers/1937079-using-rlocus-i-am-confused#answer_1203264

在 MATLAB Online 中打开

You appear to be overthinking it.

Try this —

G = tf([1 1], conv([1 2 2], [1 2 5]));

figure

rlocusplot(G)

grid

% title('Root Locus Diagram');

% xlabel('Real Axis');

% ylabel('Imaginary Axis');

The rlocusplot function has more options than rlocus, although it does not return the feedback gains. Use whatever of these functions you find best for your application.

.