[SciPy-Dev] Pole placement

[Irvin Probst]

Hi,

Is there any reason why scipy has no pole placement method (ppol in 
Scilab or place in Matlab)? I.e for a given linear system xdot=A*X+B*U, 
and a given set of poles P, find K such as eigenvalues(A-BK)=P ? Or did 
I miss it in the doc ?

I'm aware of python-control 
(http://www.cds.caltech.edu/~murray/wiki/Control_Systems_Library_for_Python) 
but 99.9% of the time I use it it is ONLY for pole placement as scipy 
already provides enough tools for simple linear systems simulations, 
furthermore python-control's place() function only task is to call the 
relevant function in the Scilot library (which I also need to install 
BTW+ bindings from scylot).

So, I've started to port in "pure" numpy/python matlab's place() 
function which is based on Kautsky et Al's algorithm, would it be of any 
intest for you ? It is not rocket science, and it is not finished yet, 
but I thought it could be useful for other people.

Let me know what you think and sorry for the disturbance if it is not 
relevant for you.

Regards

-- 
Irvin