Premium
Sampled‐data control of networked nonlinear systems with variable delays and drops
Author(s) -
Liu Xi,
Marquez Horacio J.,
Kumar K.D.,
Lin Y.
Publication year - 2013
Publication title -
international journal of robust and nonlinear control
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.361
H-Index - 106
eISSN - 1099-1239
pISSN - 1049-8923
DOI - 10.1002/rnc.3074
Subject(s) - control theory (sociology) , nonlinear system , rendezvous , control system , computer science , stability (learning theory) , exponential stability , network packet , controller (irrigation) , variable (mathematics) , mathematics , control (management) , spacecraft , engineering , computer network , agronomy , mathematical analysis , physics , electrical engineering , quantum mechanics , artificial intelligence , machine learning , biology , aerospace engineering
SUMMARY This paper investigates the stabilization problem of the nonlinear networked control systems (NCSs) with drops and variable delays. The NCS is modeled as a sampled‐data system. For such a sampled‐data NCS, the stability properties are studied for delay that can be both shorter and longer than one sampling period, respectively. The exponential stability conditions are derived in terms of the parameters of the plant and time delay. On the other hand, a model‐based control scheme based on an approximate discrete‐time model of the plant is presented to guarantee the stability of the closed‐loop system subject to variable time delays and packet losses. The performance of the proposed control schemes are examined through numerical simulations of an automated rendezvous and docking of spacecraft system. Moreover, the simulations show that by employing the model‐based controller, a higher closed‐loop control performance can be achieved. Copyright © 2013 John Wiley & Sons, Ltd.