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An algorithm to build schedule table for schedule-based fieldbus to reduce communication jitter to its minimum.
- Source :
- ISA Transactions; Aug2022, Vol. 127, p423-436, 14p
- Publication Year :
- 2022
-
Abstract
- Schedule-based fieldbus is applied widely in industrial control. Building schedule table (ST) can affect the time-critical performance for communication greatly. Communication jitters can cause some unexpected results in bus traffic scheduling and longer jitters can even cause severe delay in time-critical application. Communication jitter and evenness in arrangement of variables to be scheduled in micro-cycles in ST were two important issues dealing with the performance. An algorithm to build schedule table based on numerical co-prime method was proposed in this paper. Communication jitter in ST was investigated. Concept dealing with rank of ST was introduced. Numerical co-prime method to evaluate rank of ST was proposed. The algorithm and procedure to build schedule table based on the proposed numerical co-prime method were presented and exemplified in detail. Performance analysis and comparison of the proposed algorithm to HCF/LCM method was presented. It was proved that the proposed algorithm can reduce communication jitter to its minimum value and the longest time consumed to schedule variable in one micro-cycle, and greatly reduce the possibility the time consumed to schedule variables exceeded micro-cycle. • Communication jitter in schedule table (ST) with its impact was investigated. • Concept dealing with rank of ST was introduced. • Numerical co-prime method to evaluate rank of ST was proposed. • The algorithm and procedure to build schedule table based on the proposed method was presented • Performance analysis and comparison of the proposed method was presented [ABSTRACT FROM AUTHOR]
- Subjects :
- ALGORITHMS
SCHEDULING
Subjects
Details
- Language :
- English
- ISSN :
- 00190578
- Volume :
- 127
- Database :
- Supplemental Index
- Journal :
- ISA Transactions
- Publication Type :
- Academic Journal
- Accession number :
- 158605827
- Full Text :
- https://doi.org/10.1016/j.isatra.2021.08.022