[Octave-bug-tracker] [bug #58102] Wrong step response for transfer function

[anonymous]

URL:
  <https://savannah.gnu.org/bugs/?58102>

                 Summary: Wrong step response for transfer function 
                 Project: GNU Octave
            Submitted by: None
            Submitted on: Thu 02 Apr 2020 11:51:54 AM UTC
                Category: Octave Forge Package
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: Mohammed Al
        Originator Email: address@hidden
             Open/Closed: Open
                 Release: 5.2.0
         Discussion Lock: Any
        Operating System: GNU/Linux

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Details:

The expected (correct) step response is shown in both Mathmatica and MatLab,
the step response should oscillate since there're complex poles, however,
octave plots a wrong step resp.

PS. both octave and python controls pkg suffer from the same issue.

Look at uploaded attachments for figures

Figure 1. Wrong octave step response

Figure 2 Correct step response by MatLab

Figure 3 Correct Step response by mathmatica




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File Attachments:


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Date: Thu 02 Apr 2020 11:51:54 AM UTC  Name: wrongOctaveOutput.png  Size:
68KiB   By: None

<http://savannah.gnu.org/bugs/download.php?file_id=48738>
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Date: Thu 02 Apr 2020 11:51:54 AM UTC  Name: address@hidden  Size:
180KiB   By: None

<http://savannah.gnu.org/bugs/download.php?file_id=48739>
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Date: Thu 02 Apr 2020 11:51:54 AM UTC  Name: expected@address@hidden 
Size: 119KiB   By: None

<http://savannah.gnu.org/bugs/download.php?file_id=48740>

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