Title :
Real-time performance analysis of a fieldbus-based network
Author_Institution :
Dept. of Mech. Eng., Nat. Univ. of Singapore, Singapore
Abstract :
Message delay is one of the main issues in a real-time fieldbus-based distributed control system (DCS). Serious delay will degrade the performance of a control system and even invalidate it. Industry-used fieldbuses try to improve their real-time capacity using different algorithms. In this paper, we investigate the real-time performance of the fieldbus-based network. We take LonWork as our model. The media access control (MAC) algorithm, which mainly determines the performance of a network, is described. On the basis of a mathematical model, we analyze the throughput of the system. Finally, the message delay is presented.
Keywords :
access protocols; carrier sense multiple access; computer networks; delays; field buses; message passing; real-time systems; CSMA protocol; LonWork; carrier sense multi access; distributed control system; field buses; fieldbus-based network; media access control; message delay; real-time system; throughput analysis; Control systems; Degradation; Delay; Distributed control; Electrical equipment industry; Mathematical model; Media Access Protocol; Performance analysis; Real time systems; Throughput;
Conference_Titel :
Information, Decision and Control, 2002. Final Program and Abstracts
Conference_Location :
Adelaide, SA, Australia
Print_ISBN :
0-7803-7270-0
DOI :
10.1109/IDC.2002.995375