Open AccessRevisiting the simplified IMC tuning rules for low‐order controllers: Novel 2DoF feedback controller
Author(s) -
Rodríguez Carlos,
ArandaEscolástico Ernesto,
Guzmán José Luis,
Berenguel Manuel,
Hägglund Tore
Publication year - 2020
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.2019.0821
Subject(s) - control theory (sociology) , control engineering , controller (irrigation) , computer science , output feedback , feedback controller , internal model , engineering , control (management) , artificial intelligence , agronomy , biology
This paper revisites the direct synthesis tuning method of continuous‐time low‐order controllers, and specially PID controllers, for control of time‐delayed single‐input single‐output processes. A setpoint prefilter is included to improve the servo response and integrating load disturbances are accounted for. Robustness is addressed by the feedback controller to obtain the desired maximum sensitivity value. Similar results in step disturbance compensation are obtained with simpler analytical tuning rules when compared to recently reported methods. However, the proposed procedure enables to compensate integrating load disturbances, which are not handled in the other methods.