how to write the matlab codes for cascading multiple transfer functions

Let say i have 10 transfer functions .How to cascade(series) them?

[Walter Roberson]

Multiply them.

[phoenix]

how ? I tried the sys command but it multiplies only two transfer function.What will be the command for 10 transfer functions? @Walter Roberson

[Walter Roberson]

https://www.cds.caltech.edu/~murray/wiki/Can_I_cascade_(multiply)_transfer_functions_in_MATLAB%3F

Answer 1

[Walter Roberson]

tf1 = tf(num1, den1);
tf2 = tf(num2, den2);
tf3 = tf(num3, den3);
tf4 = tf(num4, den4);
...
tf10 = tf(num10, den10);

tf_series = tf1 * tf2 * tf3 * tf4 * tf5 * tf6 * tf7 * tf8 * tf9 * tf10;

[honore ho]

Hi all;

I have tried using this cascade tf1*tf2...; but the bode plot provides me unexpected results.

Are there any known bugs?

Answer 2

[Wilbert Clarke]

k=tf(2,1);