[SciPy-User] Root Locus Analysis

[Slater, Joseph C.]

Also of note for control design:

https://github.com/ilayn/harold (Trying to do without slycot)
and https://github.com/alchemyst/Skogestad-Python (Robust control)

Neither solves the problem at hand, but broader awareness can only help.

Best Regards- Joe


On Mar 8, 2019, at 3:53 PM, Jason Moore <moorepants at gmail.com<mailto:moorepants at gmail.com>> wrote:

slycot now builds on Windows using scikit-build, so not as painful anymore. Binaries will eventually be on conda-forge too.

Jason
moorepants.info<https://urldefense.proofpoint.com/v2/url?u=http-3A__moorepants.info&d=DwMFaQ&c=3buyMx9JlH1z22L_G5pM28wz_Ru6WjhVHwo-vpeS0Gk&r=rEyLMZFJ7eh_1iNO7KnqQcXbAnZbNOjKNJqN1v2jbrM&m=TSDmw5C_pMHHU9XEr6WBjtatVCGV9jkt9tsMicXuEpo&s=qlV2Rc63YZ-fY3-YeMClEP5mAMHMnp9lEpmDbxWpGb0&e=>
+01 530-601-9791


On Fri, Mar 8, 2019 at 12:15 PM Ralf Gommers <ralf.gommers at gmail.com<mailto:ralf.gommers at gmail.com>> wrote:


On Sun, Mar 3, 2019 at 11:00 PM Fábio Molinar <fabiomolinar at gmail.com<mailto:fabiomolinar at gmail.com>> wrote:
Hi everyone,

I am a Controls Engineer who used to use Matlab quite frequently at the University to analyze, among other things, system's stability. I am now reading again some theoretical books on control theory to refresh my mind again with some of the theories and concepts I haven't used for a while.

But since I became a python programmer and enthusiast, I am doing this review while using SciPy to program some tests and examples. And I am really enjoying using SciPy to code some of my scripts. Although I just started using it, I can't stress enough how much fun and how useful the scipy.signal package is.

But, during my theory review I came upon the Root Locus Analysis and, to my disappointment, I didn't find support for it on the scipy.signal package. Is anyone aware if there is someone working on implementing Root Locus analysis into the scipy.signal package?

Not that I am aware of.

I know that there is another python package called "control" which has support for many control analysis tools, including Root Locus analysis, but I would like to avoid installing yet another package into my python environment. Especially because installing the "control" python package isn't that straight-forward and requires a bunch of other packages/libraries.

python-control may be your best bet. If you're on Windows yes, the Slycot dependency will be very hard to install. On other platforms it should be easy, especially if you use conda (conda-forge packages for macOS and Linux are available).

Cheers,
Ralf




Yours sincerely,

Fábio Thomaz Molinar
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Professor & Chair
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