Automatic reconfiguration of untimed discrete-event systems

Macktoobian, Matin; Wonham, W. M.

doi:10.1109/iceee.2017.8108839

Cited by 8 publications

(20 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the context of SCT, taking into account faulty events as well as events associated with reconfiguration for centralized approaches leads not only to a state space explosion but also to a model interpretation problem [16]. Moreover, the literature shows that there are few methodologies for the implementation of reconfigurable controllers and more specifically in a PLC [17,18]. To address these issues, a framework for flexible, reconfigurable, and implementable controllers is developed in this paper.…”

Section: Discussionmentioning

confidence: 99%

A Fault-Tolerant and a Reconfigurable Control Framework: Application to a Real Manufacturing System

2022

View full text Add to dashboard Cite

In this paper, we propose a framework to implement a fault-tolerant and a reconfigurable distributed control approach in programmable logic controller (PLC) for manufacturing systems (MS). The reconfiguration methodology adopted in this paper is based on supervisory control theory (SCT), and it is triggered following sensor fault detection. The lost information about these sensors is replaced by timed information allowing the MS to continue its operations. The switch from a normal behavior to a degraded behavior when a sensor fault appears is ensured by reconfiguration rules. The main objective of our framework is to implement the obtained control into a PLC. To meet this objective, the distributed controllers of the two operating modes as well as the reconfiguration rules are interpreted into different Grafcet models. The implementation of these different models is verified by a checker-model technique before being tested on a digital twin and validated on a real MS.

show abstract

Section: Discussionmentioning

confidence: 99%

A Fault-Tolerant and a Reconfigurable Control Framework: Application to a Real Manufacturing System

2022

View full text Add to dashboard Cite

show abstract

“…Alternatively, supervisory control theory [19] and discrete-event systems are legit options to yield verifiability. In this regard, a new derivation of the attraction field idea [20], i.e., backtracking forcibility, can be effectively used to coordinate astrobots swarms, as well. In particular, [21] established a verifiable supervisory coordination solution which determines whether or not a particular observation setup of astrobots can be completely coordinated.…”

Section: B Coordination Controlmentioning

confidence: 99%

Astrobotics: Swarm Robotics for Astrophysical Studies

Macktoobian

Gillet

Kneib

2021

IEEE Robot. Automat. Mag.

View full text Add to dashboard Cite

This paper introduces the emerging field of astrobotics, that is, a recently-established branch of robotics to be of service to astrophysics and observational astronomy. We first describe a modern requirement of dark matter studies, i.e., the generation of the map of the observable universe, using astrobots. Astrobots differ from conventional two-degree-of-freedom robotic manipulators in two respects. First, the dense formation of astrobots give rise to the extremely overlapping dynamics of neighboring astrobots which make them severely subject to collisions. Second, the structure of astrobots and their mechanical specifications are specialized due to the embedded optical fibers passed through them. We focus on the coordination problem of astrobots whose solutions shall be collision-free, fast execution, and complete in terms of the astrobots' convergence rates. We also illustrate the significant impact of astrobots assignments to observational targets on the quality of coordination solutions To present the current state of the field, we elaborate the open problems including next-generation astrophysical projects including ∼20,000 astrobots, and other fields, such as space debris tracking, in which astrobots may be potentially used.

show abstract

“…While the second solution is to have a reconfigurable control able to adapt and exploit the services still available offered by the operative part. Several approaches have been proposed in [15] [16], [17], [18], [19] and [20].…”

Section: Reconfiguration Processmentioning

confidence: 99%

“…The key advantage of our approach is the use of separate plant element models in order to exploit a distributed control that in the one hand avoid the combinatorial explosion recurrent in the reconfiguration approaches based on centralized and decentralized control [20], [19], [18]. On the other hand, it allows the reconfiguration of the only faulty plant element without reconfiguring all the system's control.…”

Section: Conclusion and Prospectsmentioning

confidence: 99%

Time-Based Estimator for Control Reconfiguration of Discrete Event Systems (DES)

Tahiri

Carré-Ménétrier

Tajer

2019

2019 6th International Conference on Control, Decision and Information Technologies (CoDIT)

View full text Add to dashboard Cite

In this paper, we propose a Time-based estimator method to reconfigure manufacturing systems in case of sensor faults detection. The main idea is to replace the information lost by a timed one. In non-faulty behavior, each sensor is defined through two events: activation and deactivation. Our contribution is to define an estimator model of each event based on different clocks to maintain the same desired behavior of the system in a faulty mode (reconfigured).

show abstract

Automatic reconfiguration of untimed discrete-event systems

Cited by 8 publications

References 19 publications

A Fault-Tolerant and a Reconfigurable Control Framework: Application to a Real Manufacturing System

A Fault-Tolerant and a Reconfigurable Control Framework: Application to a Real Manufacturing System

Astrobotics: Swarm Robotics for Astrophysical Studies

Time-Based Estimator for Control Reconfiguration of Discrete Event Systems (DES)

Contact Info

Product

Resources

About