TITLE:
On the Performability of Hierarchical Wireless Networked Control Systems
AUTHORS:
Esraa A. Makled, Hassan H. Halawa, Ramez M. Daoud, Hassanein H. Amer, Tarek K. Refaat
KEYWORDS:
Performability, CTMC, Fault-Tolerance, Wireless Networked Control Systems, Hierarchical Networks, IEEE 802.11
JOURNAL NAME:
Intelligent Control and Automation,
Vol.6 No.2,
May
18,
2015
ABSTRACT: This paper investigates the performability of hierarchical Wireless Networked Control Systems (WNCS). The WNCS studied can operate in two modes: passive supervisor and active supervisor. It is first shown that the Markov models for both modes are identical. Performability models are then developed and a case study shows how to use these models to help make design decisions. More specifically, it is observed that the performability of a passive supervisor system increases in time while that of an active supervisor system decreases in time.