Changes

==== Bode Diagram for TikZ/PGFplots ====

==== Bode Diagram for TikZ/PGFplots ====

We use the same system as before but we draw now with the <code style="font-size:14px; border:solid lightgray 1px; padding: 2px">bode(P)</code> a bode diagram.

We use the same system as before but we draw now with <code style="font-size:14px; border:solid lightgray 1px; padding: 2px">bode(P)</code> a bode diagram.

The output is then written to a .csv file.

The output is written to a .csv file.

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{{Code|Creating a transfer function and plotting its response|<syntaxhighlight lang="octave" style="font-size:14px">

{{Code|Creating a transfer function and calculating its bode diagram|<syntaxhighlight lang="octave" style="font-size:14px">

T1 = 0.4;              # time constant

T1 = 0.4;              # time constant

P = tf([1], [T1 1]);

P = tf([1], [T1 1]);

[mag, pha, w] = bode(P);

[mag, pha, w] = bode(P);

csvwrite("dat/bode_p.csv", [w', 20*log10(mag), pha]);

csvwrite("dat/bode_p.csv", [w', 20*log10(mag), pha]);

</syntaxhighlight>}}

</syntaxhighlight>}}

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{{Code|Creating a transfer function and plotting its response|<syntaxhighlight lang="latex" style="font-size:14px">

{{Code|Creating a bode diagram with pgfplots|<syntaxhighlight lang="latex" style="font-size:14px">

\documentclass[tikz]{standalone}

\documentclass[tikz]{standalone}

\usepackage{pgfplotstable}

\usepackage{pgfplotstable}

[[File:bode_p.png]]

[[File:bode_p.png]]

Try also  (a first order low-pass filter has -3db magnitude at f=1/T1).

It can be seen that a first order low-pass filter has <math display="inline">-3\,db</math> magnitude at <math display="inline">f=1/T_1</math>.

=== Inverted Pendulum ===

=== Inverted Pendulum ===