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

[Gustavo G. <gor...@mi...>]

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