Open AccessImplicit disturbance rejection performance analysis of closed loop control systems according to communication channel limitations
Author(s) -
Alagoz Baris Baykant,
Tan Nusret,
Deniz Furkan Nur,
Keles Cemal
Publication year - 2015
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.2015.0175
Subject(s) - control theory (sociology) , disturbance (geology) , pid controller , control system , channel (broadcasting) , stability (learning theory) , computer science , closed loop , control engineering , control (management) , engineering , telecommunications , artificial intelligence , paleontology , biology , temperature control , electrical engineering , machine learning
This study investigates limits of implicit disturbance rejection capacity of negative feedback control systems on the basis of communication channel limitations. Disturbance rejection performance of closed loop control structure is evaluated by using reference to disturbance ratio (RDR). Boundaries of RDR performance for stable control system are investigated by using stability boundary locus analyses. For computer‐aided system design problems, a graphical design method for disturbance rejection PID control system is presented and illustrative examples are shown. Numerical examples show that disturbance rejection control with improved step response performance is obtainable by two‐degree‐of‐freedom design combining high gain PID control and input prefiltering.