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2009 | 19 | 2 | 271-279
Tytuł artykułu

Control error dynamic modification as an efficient tool for reduction of effects introduced by actuator constraints

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
A modification of digital controller algorithms, based on the introduction of a virtual reference value, which never exceeds active constraints in the actuator output is presented and investigated for some algorithms used in single-loop control systems. This idea, derived from virtual modification of a control error, can be used in digital control systems subjected to both magnitude and rate constraints. The modification is introduced in the form of on-line adaptation to the control task. Hence the design of optimal (in a specified sense) digital controller parameters can be separated from actuator constraints. The adaptation of the control algorithm (to actuator constraints) is performed by the transformation of the control error and is equivalent to the introduction of a new, virtual reference value for the control system. An application of this approach is presented through examples of three digital control algorithms: the PID algorithm, the dead-beat controller and the state space controller. In all cases, clear advantages of transients are observed, which yields some general conclusions to the problem of processing actuator constraints in control.
Rocznik
Tom
19
Numer
2
Strony
271-279
Opis fizyczny
Daty
wydano
2009
otrzymano
2008-07-22
poprawiono
2008-10-10
Twórcy
  • Institute of Automatic Control and Robotics, Warsaw University of Technology, ul. Św. A. Boboli 8, 02-525 Warsaw, Poland
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.bwnjournal-article-amcv19i2p271bwm
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