Re: Book for Control 2.0.0

[Lukas Reichlin]

On 22.03.2011, at 03:37, maiky76 wrote:

> Hi,
> 
> If you guys don't mind, could you tell me what is the Octave equivalent of
> the Matlab statement:
> openloopsys     = frd(openloopplant,f,'Units','Hz');
> AM                 = allmargin(openloopsys);
> 
> Knowing that openloopplant is a vector (SISO) retrieved from measurements. 
> I am not quite sure how to get the same result with Octave...
> Thanks in advance
> Mickael

There's an experimental FRD support in the devel folder [1]. It lacks a decent 
display routine and is therefore not yet included in the official releases. The 
"margin" command from control-2.0.2 is able to compute gain and phase margin. 
It requires a model, not measurements.

Regards,
Lukas


[1]
http://octave.svn.sourceforge.net/viewvc/octave/trunk/octave-forge/main/control/