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Wireless digital control of continuous passive plants over token ring networks
Author(s) -
Kottenstette Nicholas,
Antsaklis Panos J.
Publication year - 2009
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.1395
Subject(s) - token ring , asynchronous communication , computer science , token passing , controller (irrigation) , security token , wireless , control theory (sociology) , control (management) , wireless network , computer network , telecommunications , artificial intelligence , agronomy , biology
In a recent paper we have shown how wave variables can be used to interconnect passive plants with passive controllers such that the system remains l 2 ‐stable in spite of time‐varying delays and data dropouts. The present paper further enhances these results by providing a detailed model that captures time‐varying delays, data dropouts and network capacity for wireless ring token networks. It also provides a new theorem showing how an asynchronous controller can be implemented, which maintains an l 2 ‐stable system. Simulations show that the asynchronous control of a passive motor reduces the overall distortion when compared with a synchronous controller which relies on lossy data reduction techniques. These two distinct results pave the way to study high‐performance rate‐adaptive control schemes that minimize their control rate in order to match the network capacity. Copyright © 2008 John Wiley & Sons, Ltd.