A hierarchical consistency framework for real-time supervisory control

QH Ngo, KT Seow - Discrete Event Dynamic Systems, 2018 - Springer
The control framework of hierarchical consistency of timed discrete-event systems (TDES's)
is investigated in a standard two-level hierarchy. Real-time concepts and the associated …

Discrete-event system abstractions for on-line logical and real-time hierarchical control

QH Ngo - 2016 - dr.ntu.edu.sg
This thesis addresses two abstraction problems for two-level hierarchical control of discrete-
event systems (DES's). DES's are dynamic systems driven by asynchronous events evolving …

Hierarchical control of timed discrete-event systems

KC Wong, WM Wonham - Discrete Event Dynamic Systems, 1996 - Springer
An abstract hierarchical control theory is developed for a class of timed discrete-event
systems (TDES) within the discrete-event control architectural framework proposed earlier …

Hierarchically consistent controlled discrete event systems

AEC da Cunha, JER Cury - IFAC Proceedings Volumes, 2002 - Elsevier
In the hierarchical control of discrete event systems (DES), the hierarchical consistency
expresses the requirement that a control task is solvable within the model at a given level if it …

Supervisory control and reactive synthesis: a comparative introduction

R Ehlers, S Lafortune, S Tripakis, MY Vardi - Discrete Event Dynamic …, 2017 - Springer
This paper presents an introduction to and a formal connection between synthesis problems
for discrete event systems that have been considered, largely separately, in the two research …

On the consistency of hierarchical supervision in discrete-event systems

H Zhong, WM Wonham - IEEE Transactions on automatic …, 1990 - ieeexplore.ieee.org
Hierarchical structure in the supervisory control of discrete-event systems is formalized in the
automaton framework of PJ Ramadge and WM Wonham (SIAM J. Cont. Optimiz., vol. 25, no …

[PDF][PDF] TCT: A computation tool for supervisory control synthesis

L Feng, WM Wonham - 2006 8th international workshop on …, 2006 - researchgate.net
The TCT software package is designed for the synthesis of supervisory controls for untimed
discrete-event systems (DES). It can be downloaded from [6], where two different programs …

Necessary conditions for control consistency in hierarchical control of discrete-event systems

Z Chao, Y Xi - IEEE transactions on automatic control, 2003 - ieeexplore.ieee.org
Hierarchical consistency is an important concept in control theory of hierarchical discrete-
event systems (DESs). In order to establish corresponding control structure in high level …

Hierarchical interface-based supervisory control: Serial case

RJ Leduc, BA Brandin, WM Wonham… - Proceedings of the …, 2001 - ieeexplore.ieee.org
We present a hierarchical method that decomposes a system into two subsystems, and
restricts the interaction of the subsystems by means of an interface. We present a definition …

Hierarchical robust supervisory control of discrete-event systems

MZ Fekri, S Hashtrudi-Zad - 2008 American Control …, 2008 - ieeexplore.ieee.org
In this paper, the problem of robust supervisory control of a finite family of discrete-event
plants is studied. Each plant has a separate closed specification language. A hierarchical …