Implementation of diagnosis approach for Discrete Event Systems
نویسنده
چکیده
This paper presents an approach of diagnosis for manufacturing system considered as Discrete Event Systems. It uses plant decomposition and a decentralized diagnosis structure to reduce the combinatory explosion found in centralized structures. The local behavior is extracted using decentralized plant modeling. It is from this behavior that possible faults are identified to construct abnormal behavior models. The approach is illustrated around a manufacturing benchmark.
منابع مشابه
Using Interval Petri Nets and Timed Automata for Diagnosis of Discrete Event Systems (DES)
A discrete event system (DES) is a dynamic system that evolves in accordance with the abrupt occurrence, at possibly unknown irregular intervals, of physical events. Because of the special nature of these systems, different tools are currently used for their analysis, design and modeling. The main focus of this paper is the presentation of a new modeling approach of Discrete Event Systems. The ...
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 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 کاملAppointment process of open-heart surgery in Shahid Rajaei Heart Hospital using a discrete event simulation approach
Background: The waiting list is a list of selected patients in the surgical queue. If demand exceeds capacity, the waiting list grows rapidly, which may lead to unacceptable waiting for patients, especially those in need of acute medical care. Patients waiting for heart surgery are placed on the waiting list for surgery, and sometimes the waiting time is longer than patients expect. Reducing th...
متن کاملTime Management Approach on a Discrete Event Manufacturing System Modeled by Petri Net
Discrete event system, Supervisory control, Petri Net, Constraint This paper presents a method to manage the time in a manufacturing system for obtaining an optimized model. The system in this paper is modeled by the timed Petri net and the optimization is performed based on the structural properties of Petri nets. In a system there are some states which are called forbidden states an...
متن کاملPartial 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 کامل