How to plot the Unit Step response of a transfer function?

I would like to kindly ask how do I plot the Unit Step response, when given the transfer function.

For instance C = any simple transfer function

How would I plot the Unit Step response of this Transfer Function on any given axes

Many thanks in advance.

Answer 1

[DUY Nguyen]

%Hope this could help you!


% Define the transfer function
num = [10 120 660 2280 4730 4600 1600];
den = [1 14 113 628 2379 6350 11115 9800 3200];
sys = tf(num, den);

% Plot the unit step response
step(sys);

% Add title and axis labels
title('Unit Step Response');
xlabel('Time (seconds)');
ylabel('Output');

% Customize the axis
xlim([0 10]); % set x-axis limits
ylim([0 1.2]); % set x-axis limits
grid on; % add grid lines

[Thomas]

Very Helpful, thank you for sharing your knowledge.

[Thanh Thuy Duyen Nguyen]

if I plot 2 step response function how could I assign color to each plot?

[Sam Chak]

@Thanh Thuy Duyen Nguyen

You can refer to the example in stepplot.

https://www.mathworks.com/help/control/ref/dynamicsystem.stepplot.html?s_tid=doc_ta#mw_76475fac-4054-4925-9c27-f6e960f30813

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