Open AccessDesign of quantised dynamic output feedback for decentralised ℋ ∞ control systems
Author(s) -
Zhai Guisheng,
Chen Ning,
Gui Weihua
Publication year - 2013
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.2012.1029
Subject(s) - control theory (sociology) , output feedback , attenuation , controller (irrigation) , disturbance (geology) , closed loop , computer science , channel (broadcasting) , control engineering , control system , control (management) , engineering , electrical engineering , artificial intelligence , paleontology , agronomy , computer network , physics , optics , biology
The design of quantised dynamic output feedback for decentralised ℋ ∞ control systems is considered with multi‐input and multi‐output. It is assumed that a decentralised dynamic output feedback has been designed for a decentralised continuous‐time LTI system, so that the closed‐loop system is stable and a desired ℋ ∞ disturbance attenuation level is achieved, and that each channel's measurement outputs are quantised before they are passed to the local controller. We propose a local‐output‐dependent strategy for updating the quantisers’ parameters, so that the overall closed‐loop system is asymptotically stable and achieves the same ℋ ∞ disturbance attenuation level. Both the pre‐designed controllers and the quantisers’ parameters are constructed in a decentralised manner, depending on local measurement outputs.