Title :
Realtime evaluation and improvement of FF on aperiodic messages
Author :
Wang, Zhi ; Li, Shanbin ; Song, Yeqiong ; Wang, Tianran ; Sun, Youxian
Author_Institution :
Nat. Lab. of Ind. Control Technol., Zhejiang Univ., Hangzhou, China
Abstract :
How to support real-time traffic of important aperiodic messages using Foundation Fieldbus (FF) is investigated in this paper. An integrated worst-case response time (WCRT) analysis of aperiodic message indicates FF can´t effectively guarantee real-time traffic of important aperiodic message despite FF providing such mechanisms as PT (Pass Token) priority and PT rotation period, etc. After finding the cause of current mechanism´ deficiency, an improved mechanism proposed and validated with simulation in this paper. Further, some conclusions such as ongoing work are provided in this paper.
Keywords :
field buses; message passing; aperiodic message; foundation fielders; pass token mechanism; real time evaluation; real time traffic; worst case response time analysis; Delay; Field buses; Iron; Permission; Production facilities; Protocols; Scheduling algorithm; Sun; Timing;
Conference_Titel :
Industrial Electronics Society, 2003. IECON '03. The 29th Annual Conference of the IEEE
Print_ISBN :
0-7803-7906-3
DOI :
10.1109/IECON.2003.1280089
