Re: [python-control-discuss] discrete time / multiple repositories

[Roberto B. <rob...@su...>]

Hi Gustavo

yottalab.py requires some changes in some python control files. I'll 
check ASAP my last modifications and I send you the required files.

Best regards

Roberto

On 11/25/2011 09:21 PM, Gustavo Goretkin wrote:
> Hey list,
>
> I'd like to try use some discrete-time in python-control.
> Specifically, I want MATLAB's c2d and dlqr.
>
> I'm aware of the discussion here [1] and code here [2]. yottalab.py
> has a all the functionality I want (thanks!) but I'm not sure which
> branch of python-control it is assuming. Specifically in c2d, line
> line 173, there is a call to construct a statespace object which takes
> 5 arguments A,B,C,D,Ts, but no such constructor seems to exist in
> python-control. From the rest of the code (i.e. d2c), I infer that all
> it seems to do is add a field called "Tsamp" to the statespace object.
>
> If the statespace object can represent both continuous and
> discrete-time systems, what then should the semantics be? It looks
> like  Tsamp=0 for continuous time systems.
>
> It also looks like there is a repository here [3]. Is it going to be
> merged with the sourceforge repository eventually, or other way
> around?
>
> Thanks!
> Gustavo
>
> [1] http://mail.scipy.org/pipermail/scipy-dev/2010-August/015468.html and
> [2] www.dti.supsi.ch/~bucher/wp-content/uploads/2011/03/yottalab.py
> [3] https://bitbucket.org/eike_welk/python-control
>
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