Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Maximally Permissive Hierarchical Control of Decentralized Discrete Event Systems
Date
2011-04-01
Author
SCHMİDT, KLAUS WERNER
Schmidt, Klaus Verner
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
269
views
0
downloads
Cite This
The subject of this paper is the synthesis of natural projections that serve as nonblocking and maximally permissive abstractions for the hierarchical and decentralized control of large-scale discrete event systems. To this end, existing concepts for nonblocking abstractions such as natural observers and marked string accepting (msa)-observers are extended by local control consistency (LCC) as a novel sufficient condition for maximal permissiveness. Furthermore, it is shown that, similar to the natural observer condition and the msa-observer condition, also LCC can be formulated in terms of a quasi-congruence. Based on existing algorithms in the literature, this allows to algorithmically compute natural projections that are either natural observers or msa-observers and that additionally fulfill LCC. The obtained results are illustrated by the synthesis of nonblocking and maximally permissive supervisors for a manufacturing system.
Subject Keywords
Decentralized control
,
Discrete event systems
,
Hierarchical control
,
Large-scale systems
,
Maximal permissiveness
,
Supervisory control
URI
https://hdl.handle.net/11511/48492
Journal
IEEE TRANSACTIONS ON AUTOMATIC CONTROL
DOI
https://doi.org/10.1109/tac.2010.2067250
Collections
Department of Electrical and Electronics Engineering, Article
Suggestions
OpenMETU
Core
Hierarchical multitasking control of discrete event systems: Computation of projections and maximal permissiveness
Schmidt, Klaus Verner; Cury, José E.r. (null; 2010-12-01)
This paper extends previous results on the hierarchical and decentralized control of multitasking discrete event systems (MTDES). Colored observers, a generalization of the observer property, together with local control consistency, allow to derive sufficient conditions for synthesizing modular and hierarchical control that are both strongly nonblocking (SNB) and maximally permissive. A polynomial procedure to verify if a projection fulfills the above properties is proposed and in the case they fail for a g...
Hierarchical and decentralized multitasking control of discrete event systems
Schmidt, Klaus Verner; Cury, José E. R. (2007-12-01)
In this paper, a hierarchical and decentralized approach for composite discrete-event systems (DES) that have to fulfill multiple tasks is elaborated. Colored marking generators that can distinguish classes of tasks are used as the system model, and a colored abstraction procedure as well as sufficient conditions for nonblocking and hierarchically consistent control are developed. It is shown that the computational complexity for supervisor computation is reduced. A flexible manufacturing system example dem...
Marked-string accepting observers for the hierarchical and decentralized control of discrete event systems
Schmidt, Klaus Verner (2006-12-01)
The paper extends previous work, where we develop a control theory for nonblocking hierarchical control of decentralized discrete event systems (DES). The results are based on two technical conditions for the hierarchical abstraction: it has to be (i) locally nonblocking and (ii) marked string accepting. In this paper, we investigate the systematic construction of the hierarchical abstraction. Starting from an initial natural projection which need not fulfill (i) and (ii), we provide an algorithm to compute...
Applied supervisory control for a flexible manufacturing system
Moor, Thomas; Schmidt, Klaus Verner; Perk, Sebastian (2010-12-01)
This paper presents a case study in the design and implementation of a discrete event system (DES) of real-world complexity. Our DES plant is a flexible manufacturing system (FMS) laboratory model that consists of 29 interacting components and is controlled via 107 digital signals. Regarding controller design, we apply a hierarchical and decentralised synthesis method from earlier work in order to achieve nonblocking and safe closed-loop behaviour. Regarding implementation, we discuss how digital signals tr...
Nonblocking hierarchical control of decentralized des
Schmidt, Klaus Verner; Moor, Thomas (null; 2005-12-01)
This work considers a hierarchical control architecture for a class of discrete event systems which can also be applied to decentralized control systems. It is shown that nonblocking supervisory control on the high level of the hierarchy results in nonblocking and hierarchically consistent control on the low level. Copyright © 2005 IFAC.
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
K. W. SCHMİDT and K. V. Schmidt, “Maximally Permissive Hierarchical Control of Decentralized Discrete Event Systems,”
IEEE TRANSACTIONS ON AUTOMATIC CONTROL
, pp. 723–737, 2011, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/48492.