Open AccessActive disturbance rejection in switched neutral‐delay systems based on equivalent‐input‐disturbance approach
Author(s) -
Wu Min,
Gao Fang,
She Jinhua,
Cao Weihua
Publication year - 2016
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.2016.0211
Subject(s) - control theory (sociology) , disturbance (geology) , stability (learning theory) , estimator , term (time) , state (computer science) , mathematics , control (management) , computer science , algorithm , paleontology , artificial intelligence , biology , statistics , physics , quantum mechanics , machine learning
This study presents a new configuration and a design method for the control of a switched neutral‐delay system. The equivalent‐input‐disturbance (EID) approach is used to construct an EID estimator to estimate the influence of exogenous disturbances on the system. A new control law is constructed that incorporates an EID estimate to ensure satisfactory disturbance rejection performance. A sufficient condition for uniformly ultimate boundedness is derived in term of linear matrix inequalities (LMIs) to guarantee the stability of the system. Moreover, state feedback control laws and state observers are designed based on the LMIs for arbitrary switching rules. A numerical example demonstrates the validity of the method.