step responses for a variable in matlab

To generate a step response for a variable in MATLAB, you can use the step function. This function creates a plot of the response of a dynamic system to a step input.

Here's an example code snippet:

main.m
% Define the transfer function
num = [1];
den = [1 1];
sys = tf(num, den);

% Generate the step response plot
step(sys);
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In this example, we define a transfer function with a numerator of [1] and a denominator of [1 1]. The transfer function represents a first-order system with a time constant of 1. We then generate a step response plot for this system using the step function.

You can customize the plot by adding a title, labels for the axes, and setting the plot limits. Here is an example code snippet:

main.m
% Generate the step response plot
step(sys);
title('Step Response');
xlabel('Time (s)');
ylabel('Amplitude');
ylim([0 1.2]);
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In this example, we add a title to the plot, label the x and y axes, and set the y-axis limits to [0 1.2]. These customizations can help make the plot more informative and easier to interpret.