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One point relay identification experiment based on constant-phase filter

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F08%3A00500011" target="_blank" >RIV/49777513:23520/08:00500011 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    One point relay identification experiment based on constant-phase filter

  • Original language description

    Using standard relay identification methods, one obtains a critical frequency response point with the phase shift $-180$ degrees. Such phase is not optimal for consequential PI(D) controller design especially when there is no additional knowledge about the process (e.g. static gain). Currently, an adaptive filter is used to get a frequency response sample with different phase shift. Adaptive filter parameters are tuned during the identification experiment. Unfortunately, the adaptation makes the experiment more time consuming. This paper presents a new low-order filter providing arbitrary constant phase at about three decades. Such filter embedded into relay tuner shortens the experiment significantly. Further, the paper discusses several implementation aspect. The authors believe that presented approach may lead to improvement of existing relay autotuners

  • Czech name

    Jednobodový reléový identifikační experiment na základě filtru s konstantní fází

  • Czech description

    Tradičně je z reléového experimentu získáván bod s fázovým zpožděním -180 stupňů. Tato fáze ale nemusí být optimální, zejména když neznáme statické zesílení systému. Článek popisuje filtr s konstatní fází, pomocí kterého můžeme identifikovat bod s libovolným fázovým zpožděním. Díky tomuto filtru mohou být vylepšeny stávající reléové tunery.

Classification

  • Type

    D - Article in proceedings

  • CEP classification

    BC - Theory and management systems

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/FI-IM3%2F056" target="_blank" >FI-IM3/056: Industrial controllers autotuning methods and algorithms and their implementation to the ZAT-Plant Suite MP control system.</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2008

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Article name in the collection

    Process Control 2008

  • ISBN

    978-80-7395-077-4

  • ISSN

  • e-ISSN

  • Number of pages

    9

  • Pages from-to

  • Publisher name

    University of Pardubice

  • Place of publication

    Pardubice

  • Event location

    Kouty nad Desnou

  • Event date

    Jun 12, 2008

  • Type of event by nationality

    EUR - Evropská akce

  • UT code for WoS article