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

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

Hi Roberto,

Thanks for the quick reply!

Regarding the dlqr function in yottalab.py -- it doesn't seem to
depend on the sampling time of the discrete time system and this
appears to produce incorrect result, or perhaps maybe I am misusing
the function.

Thank you,
Gustavo

On Fri, Nov 25, 2011 at 3:38 PM, Roberto Bucher <rob...@su...> wrote:
> 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
>>
>> ------------------------------------------------------------------------------
>> All the data continuously generated in your IT infrastructure
>> contains a definitive record of customers, application performance,
>> security threats, fraudulent activity, and more. Splunk takes this
>> data and makes sense of it. IT sense. And common sense.
>> http://p.sf.net/sfu/splunk-novd2d
>> _______________________________________________
>> python-control-discuss mailing list
>> pyt...@li...
>> https://lists.sourceforge.net/lists/listinfo/python-control-discuss
>
>
> ------------------------------------------------------------------------------
> All the data continuously generated in your IT infrastructure
> contains a definitive record of customers, application performance,
> security threats, fraudulent activity, and more. Splunk takes this
> data and makes sense of it. IT sense. And common sense.
> http://p.sf.net/sfu/splunk-novd2d
> _______________________________________________
> python-control-discuss mailing list
> pyt...@li...
> https://lists.sourceforge.net/lists/listinfo/python-control-discuss
>