Sensor/Actuator mobility in noisy Wi-Fi based Networked Control System

Author

Halawa, Hassan H. ; Elhamy, A. ; Ibrahim, M.A. ; Reheem, E.E.A. ; Faramawy, Y.I.E. ; Refaat, Tarek K. ; Daoud, Ramez M. ; Amer, Hassanein H.

Author_Institution

Electron. Eng. Dept., American Univ. in Cairo, Cairo, Egypt

fYear

2013

fDate

Feb. 27 2013-March 1 2013

Firstpage

904

Lastpage

909

Abstract

The increase in the application of Wireless Networked Control Systems (WNCS) in industrial automation motivates the study of the effect of mobility of WNCS nodes in the presence of noise. A WNCS system should satisfy certain end-to-end delay constraints, with all types of propagation, queuing, encapsulation/decapsulation and processing delays. Also, no data packets should be lost. These requirements should be met in the existence of 2.4GHz Industrial, Scientific and Medical (ISM) band interference. In this paper, an enhanced WNCS system is studied based on previous publications using unmodified Wi-Fi and Ethernet. The system is modified to include Sensor/Actuator mobility. A comparison between network and medium congesting interference in the presence of mobility is also presented and analyzed. Simulations are conducted on OPNET Network Modeler and all simulation results are subjected to a 95% confidence analysis. The system presented is shown to meet all control system requirements.

Keywords

actuators; networked control systems; sensors; wireless LAN; Ethernet; ISM band interference; OPNET network modeler; WNCS; Wi-Fi based networked control system; confidence analysis; control system requirement; data packet; encapsulation-decapsulation delay; end-to-end delay constraint; frequency 2.4 GHz; industrial automation; industrial-scientific-medical band; mobility presence; noise presence; processing delay; propagation delay; queuing delay; sensor-actuator mobility; wireless fidelity; Actuators; Analytical models; Delays; IEEE 802.11 Standards; Noise; Robot sensing systems; Trajectory;

fLanguage

English

Publisher

ieee

Conference_Titel

Mechatronics (ICM), 2013 IEEE International Conference on

Conference_Location

Vicenza

Print_ISBN

978-1-4673-1386-5

Electronic_ISBN

978-1-4673-1387-2

Type

conf

DOI

10.1109/ICMECH.2013.6519161

Filename

6519161