Predictability in Discrete-event Systems under Partial Observation
نویسندگان
چکیده
This paper studies the problem of predicting occurrences of a significant event in a discrete-event system. The predictability of occurrences of an event in a system is defined in the context of formal languages. The predictability of a language is a stronger condition than the diagnosability of the language. An implementable necessary and sufficient condition for predictability of occurrences of an event in systems modeled by regular languages is presented.
منابع مشابه
Partial Observation in Distributed Supervisory Control of Discrete-Event Systems
Distributed supervisory control is a method to synthesize local controllers in discrete-eventsystems with a systematic observation of the plant. Some works were reported on extending this methodby which local controllers are constructed so that observation properties are preserved from monolithic todistributed supervisory control, in an up-down approach. In this paper, we find circumstances in ...
متن کاملDecentralized prognosis of fuzzy discrete-event systems
This paper gives a decentralized approach to the problem of failure prognosis in the framework of fuzzy discrete event systems (FDES). A notion of co-predictability is formalized for decentralized prognosis of FDESs, where several local agents with fuzzy observability rather than crisp observability are used in the prognosis task. An FDES is said to be co-predictable if each faulty event can be...
متن کاملA language measure for partially observed discrete event systems
Recent literature has introduced and validated a signed real measure of regular languages for quantitative analysis and synthesis of discrete-event supervisory (DES) control systems, where all events are assumed to be observable. This paper presents a modification of the language measure for supervisory control under partial observation and shows how to generalize the analysis when some of the ...
متن کاملSupervisory Control of Real-time Discrete Event Systems under Partial Observation
In this paper, we address the issue of synthesizing an optimal supervisor for real-time discrete event systems modeled by timed automata and under partial observation. Our approach is based on a method of transformation of timed automata into particular finite state automata called Set-Exp-Automata. That is, given the timed automata of the plant and the specification, we construct two Set-Exp-A...
متن کاملRecent Developments in Discrete Event Systems
This article is a brief exposure of the process approach to a newly emerging area called "discrete event systems" in control theory and summarizes some of the recent developments in this area. Discrete event systems is an area of research that is developing within the interstices of computer, control and communication sciences. The basic direction of research addresses issues in the analysis an...
متن کامل