[Octave-bug-tracker] [bug #46597] control 3.0.0. Impulse yields incorrect result

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?46597>

                 Summary: control 3.0.0. Impulse yields incorrect result
                 Project: GNU Octave
            Submitted by: None
            Submitted on: jue 03 dic 2015 11:52:28 UTC
                Category: Octave Forge Package
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: Pablo Fernández
        Originator Email: address@hidden
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.0.0
        Operating System: GNU/Linux

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Details:

I think impulse yields and incorrect result in control 3.0.0.



For example, if I do, in my box

>> s = tf("s");
>> G = 1/(s+1);
>> R = 1/s;
>> y = impulse(R);

y returns an array of  0.1
where it should be an array of 1

Also, impulse(R*G) should return the same plot as step(G) but it doesn't. For
example:

>> y = impulse(R*G);
>> y(end)
ans =  10.438

But it should be 1.


I have compared with http://octave-online.net/ featuring 
Octave 3.8.2 with control 2.6.6 (according to the ver command) where results
are correct.

Thanks 




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