Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!xlned.com!feeder5.xlned.com!newsfeed.xs4all.nl!newsfeed3.news.xs4all.nl!xs4all!post.news.xs4all.nl!not-for-mail Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.007 X-Spam-Evidence: '*H*': 0.99; '*S*': 0.00; 'widely': 0.05; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'python': 0.11; 'jan': 0.12; 'systems.': 0.12; 'calculates': 0.16; 'finney': 0.16; 'hint': 0.16; 'hits': 0.16; 'received:80.91.229.3': 0.16; 'received:plane.gmane.org': 0.16; 'reedy': 0.16; 'td,': 0.16; 'tuning': 0.16; 'wrote:': 0.18; 'bit': 0.19; 'mechanism': 0.19; 'thanks.': 0.20; 'python?': 0.22; 'header:User-Agent:1': 0.23; 'algorithms.': 0.24; 'post': 0.26; 'header:X-Complaints-To:1': 0.27; 'header:In-Reply-To:1': 0.27; 'tried': 0.27; 'skip:p 30': 0.29; 'related': 0.29; 'url:wiki': 0.31; 'usually': 0.31; 'url:wikipedia': 0.31; 'writes:': 0.31; 'languages': 0.32; 'entirely': 0.33; 'there': 0.35; 'shows': 0.36; 'url:org': 0.36; 'should': 0.36; 'step': 0.37; 'feedback': 0.38; 'ben': 0.38; 'generic': 0.38; 'to:addr:python-list': 0.38; 'pm,': 0.38; 'to:addr:python.org': 0.39; 'received:org': 0.40; 'algorithms': 0.60; 'received:173': 0.61; 'first': 0.61; 'such': 0.63; 'here': 0.66; 'hand.': 0.84; 'mirrors': 0.84; 'received:fios.verizon.net': 0.84; 'controller': 0.91; 'response,': 0.91 X-Injected-Via-Gmane: http://gmane.org/ To: python-list@python.org From: Terry Reedy Subject: Re: PID tuning. Date: Mon, 14 Oct 2013 18:48:22 -0400 References: <7wiowzlg4t.fsf@benfinney.id.au> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable X-Gmane-NNTP-Posting-Host: pool-173-59-117-133.phlapa.fios.verizon.net User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.0.1 In-Reply-To: <7wiowzlg4t.fsf@benfinney.id.au> X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 29 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1381790913 news.xs4all.nl 15941 [2001:888:2000:d::a6]:47269 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:56829 On 10/14/2013 5:03 PM, Ben Finney wrote: > Renato Barbosa Pim Pereira > writes: > >> I am looking for some software for PID tuning that would take the >> result of a step response, and calculates Td, Ti, Kp, any suggestion >> or hint of where to start?, thanks. > > Is this related to Python? What is =E2=80=9CPID tuning=E2=80=9D, https://en.wikipedia.org/wiki/PID_controller "A proportional-integral-derivative controller (PID controller) is a=20 generic control loop feedback mechanism (controller) widely used in=20 industrial control systems. " There are three tuning constants, and they are now usually tuned with=20 various algorithms instead of entirely by hand. Following Ian's=20 suggestion shows that Python is one of the languages used for such=20 algorithms. > and what have you tried already? Renato should have searched first as a search now is a bit contaminated=20 by multiple hits for the post here and on mirrors ;-). --=20 Terry Jan Reedy