Open AccessTuning of reset proportional integral compensators with a variable reset ratio and reset band
Author(s) -
Baños Alfonso,
Davó Miguel A.
Publication year - 2014
Publication title -
iet control theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.059
H-Index - 108
eISSN - 1751-8652
pISSN - 1751-8644
DOI - 10.1049/iet-cta.2014.0031
Subject(s) - control theory (sociology) , integrator , reset (finance) , robustness (evolution) , compensation (psychology) , variable (mathematics) , pid controller , computer science , parametric statistics , mathematics , control engineering , control (management) , engineering , bandwidth (computing) , temperature control , mathematical analysis , artificial intelligence , financial economics , economics , psychology , computer network , biochemistry , chemistry , statistics , psychoanalysis , gene
The PI+CI compensator, given by the parallel connection of a proportional integral (PI) compensator and a Clegg integrator (CI), has been shown to be effective in a number of practical applications, overcoming fundamental limitations of PI compensation. Two key design aspects of PI+CI compensation is the use of the resetting law (zero crossing/reset band) and a (constant/variable) reset ratio; these two design factors have been previously used in control practice, but using heuristic design methods. This work develops a systematic design method for the tuning of reset PI compensators, specifically for first‐ and second‐order plants, obtaining in both cases simple tuning rules. In addition, several detailed examples are developed; therefore, a detailed analysis of cost of feedback and robustness again parametric uncertainty is also given. Finally, an experiment of pH In‐Line control is made to show the advantages of the proposed tuning rule.