Simulink 2020 problem with the sintaxis of transfer function

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Erika Molano
Erika Molano on 12 Apr 2020
Answered: Mary Baran on 1 Jan 2022
Best regards
I just downloaded MATLAB version 2020, and I coded a very simple program. The problem is that it throws the following error:
Error (line 5) s = tf ('s')
I executed the same code on other computers with MATLAB and mine is the only one where this error appears. I hope you can help me as soon as possible.
Here I attach the code
  1 Comment
Nikhil Sonavane
Nikhil Sonavane on 15 Apr 2020
Its always recommended that you add the code here as text and not as a screenshot.

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Answers (3)

Nikhil Sonavane
Nikhil Sonavane on 15 Apr 2020
Edited: Nikhil Sonavane on 15 Apr 2020
I executed your code in MATLAB 2020a and it worked perfectly fine. It seems that a toolbox containing tf function is missing. Please check if at least one of the following toolbox are installed in your MATLAB-
  • Control System Toolbox
  • DSP System Toolbox
  • Model Predictive Control Toolbox
  • Signal Processing Toolbox
I would suggest you install Control System Toolbox, if it is not already installed and proceed further.

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John Shimer on 17 Jul 2021
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Mary  Baran
Mary Baran on 1 Jan 2022
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