Open AccessIdentification of two‐input two‐output process using state‐space analysis
Author(s) -
Nema Swapnil,
Padhy Prabin Kumar
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.2014.1079
Subject(s) - control theory (sociology) , relay , state space representation , hysteresis , state space , matrix (chemical analysis) , identification (biology) , noise (video) , process (computing) , system identification , dead time , computer science , mathematics , algorithm , physics , data modeling , statistics , power (physics) , materials science , control (management) , botany , image (mathematics) , quantum mechanics , database , artificial intelligence , composite material , biology , operating system
An analytical expression for the exact identification of two‐input two‐output (TITO) process using hysteresis relay is presented in this study. The identified transfer matrix consists of four independent first‐order plus delay time (FOPDT) models and the time constants, delays and the gains of the FOPDT models are obtained from the limit cycle measurements. In this study, analytical expressions are derived using state‐space analysis to identify the exact transfer matrix of the TITO process (TITO system). Problem of chattering and measurement noise is attenuated using relay with hysteresis. The simulation examples and real‐time experiment show the effectiveness of the proposed method.