Open AccessObserver‐based distributed hybrid‐triggered H ∞ control for sensor networked systems with input quantisation
Author(s) -
Tan Yushun,
Li Qing,
Du Dongsheng,
Niu Ben,
Fei Shumin
Publication year - 2020
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.2020.0026
Subject(s) - control theory (sociology) , observer (physics) , controller (irrigation) , computer science , stability theory , networked control system , lyapunov stability , transmission (telecommunications) , logarithm , mathematics , control (management) , nonlinear system , artificial intelligence , telecommunications , mathematical analysis , physics , quantum mechanics , agronomy , biology
In this technical note, the problem of observer‐based controller design is considered for sensor networked systems subject to distributed hybrid‐triggered transmission scheme and input quantisation. A novel observer model based on coupled transmission signals from multi‐channel is first proposed to estimate unavailable state variables and exploited in the feedback protocol. In order to provide a trade‐off between saving network resources and improving system performance, a distributed hybrid‐triggered transmission scheme with communication delays is adopted to update the observer input signals. For the sake of further reducing the occupancy of network resources, the control input signal is quantised by a logarithmic quantiser. Then, by making use of the Lyapunov stability theory, the sufficient conditions guaranteeing the system asymptotically stable are presented. Moreover, the explicit expressions of observer and controller parameters are achieved by solving a set of linear matrix inequalities. Finally, two simulation examples are provided to illustrate the rationality of the proposed control method.