期刊
DISCRETE EVENT DYNAMIC SYSTEMS-THEORY AND APPLICATIONS
卷 26, 期 2, 页码 263-293出版社
SPRINGER
DOI: 10.1007/s10626-014-0208-4
关键词
Discrete-event systems; Distributed supervisory control; Communication delay; Delay-robustness
资金
- National Nature Science Foundation of China [61403308]
- Fundamental Research Funds for the Central Universities, China [3102014JCQ01069]
- Program to Disseminate Tenure Tracking System, MEXT, Japan
- Natural Sciences and Engineering Research Council, Canada [7399]
This paper identifies a property of delay-robustness in distributed supervisory control of discrete-event systems (DES) with communication delays. In previous work a distributed supervisory control problem has been investigated on the assumption that inter-agent communications take place with negligible delay. From an applications viewpoint it is desirable to relax this constraint and identify communicating distributed controllers which are delay-robust, namely logically equivalent to their delay-free counterparts. For this we introduce inter-agent channels modeled as 2-state automata, compute the overall system behavior, and present an effective computational test for delay-robustness. From the test it typically results that the given delay-free distributed control is delay-robust with respect to certain communicated events, but not for all, thus distinguishing events which are not delay-critical from those that are. The approach is illustrated by a workcell model with three communicating agents.
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