Informatics Publishing Limited

D. Pamela ¹, M. S. Godwin Premi ²

Affiliations
1 Department of Communication Engineering, Sathyabama University, Chennai - 600119, Tamil Nadu, IN
2 Department of Electronics and Control, Sathyabama University, Chennai - 600119, Tamil Nadu, IN

Abstract

Objectives: In the present scenario, modern Industrial and Commercial Systems require communication networks to exchange information between spatially distributed communicating equipments. The challenge for researches in this area is to compensate for transmission delay, packet loss and manage network traffic. This paper focuses on design of controllers for one such application where the process and the controller communicate through Ethernet via TCP/IP protocol. Methods/Analysis: Different control strategies for temperature control in Networked control System, is analyzed and the performance of Conventional and Model based controllers over the network was compared in terms of performance metrics like settling time and peak-overshoot. The transmission delay was deliberately introduced into the system and the controller performance was analysed for different traffic levels by introducing imaginary nodes in the network. The simulation was done using LabVIEW. Findings: The obtained results prove that Model based controllers perform better in networked environment, offering faster settling time and reduced peak overshoots. Conclusion: The network delay and traffic introduced into the process disturbs the stability of the system, but the control strategies adopted in this work offers better performance and maintain the stability of the system.

Keywords

IMC Controller, Network Control System, PID, Time Delay, TCP/IP

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M. S. Godwin Premi ¹, K. S. Shaji ²

Affiliations
1 Department of Electronics and Telecommunication Engineering, Sathyabama University, Chennai, Tamil Nadu, IN
2 Rajaas International Institute of technology for Women, Nagercoil, Tamil Nadu, IN

Abstract

Set routing is one of the methods used for maximum data collection in mobile wireless sensor networks. In this routing the entire network is divided into many sets. Route maintenance is the major problem with any routing algorithm in mobile wireless sensor networks. Because of mobility and node failures the routes keeps on changing. The problem with the route maintenance in set routing can be overcome by using fuzzy sets. This fuzzy set provides the quality of the old route as well as the necessity for the new route. This is given along with the routing table and is written on the sink node or base station. This reduces the individual node overhead. Simulation is performed with OMNET++ simulator. Result shows the effectiveness of the fuzzy set in route maintenance and new route determination.

Keywords

Mobile Nodes, Neighbouring Nodes, Set Routing, Wireless Sensor Networks.

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