Open AccessComposite anti‐disturbance control for switched systems via mixed state‐dependent and time‐driven switching
Author(s) -
Yang Dong,
Zhao Jun
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.2015.1183
Subject(s) - control theory (sociology) , disturbance (geology) , dwell time , composite number , controller (irrigation) , lyapunov function , computer science , state (computer science) , state observer , control (management) , control engineering , engineering , nonlinear system , artificial intelligence , paleontology , algorithm , biology , medicine , clinical psychology , physics , quantum mechanics , agronomy
This study is concerned with the problem of composite anti‐disturbance control for switched linear systems with multiple disturbances. The authors' aim is to construct a disturbance observer to estimate the disturbance generated by an exogenous system, then design a composite controller based on the disturbance observer and a mixed state‐dependent and time‐driven switching law, such that the closed‐loop system is internally stable, and different types of disturbances are attenuated and rejected. First, a mixed switching law is designed, which guarantees a dwell time even when all subsystems are unstable. Then, a sufficient condition ensuring the solvability of the composite anti‐disturbance control problem is presented via multiple Lyapunov functions. Finally, the effectiveness of the proposed control design scheme is illustrated by its application to an aero‐engine, which cannot be handled by the existing approaches.