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Paper Abstract and Keywords
Presentation 2008-06-02 14:25
Modeling of Discrete Event Systems by Mealy Automata
Toshimitsu Ushio (Osaka Univ.), Shigemasa Takai (Kyoto Inst. Tech.) CST2008-4
Abstract (in Japanese) (See Japanese page) 
(in English) Supervisory control is a general framework of logical control of discrete event systems. A supervisor assigns a set of control-disabled controllable events based on observations of output events so that the controlled discrete event system generates specified languages. In conventional supervisory control, it is assumed that observed events are determined by internal events deterministically. But, this assumption does not hold in a discrete event system with sensor failures and a mobile system, where each observed event depends on not only an internal event but also a state just before the occurrence of the internal event.
In this report, we model such a discrete event systems by a Mealy automaton with a nondeterministic output function. We introduce two kinds of supervisors: one assigns each control action based on a pessimistic policy and the other based on an optimistic one.
We show necessary and sufficient conditions for the existence of each supervisor.
Keyword (in Japanese) (See Japanese page) 
(in English) supervisory control / partial observation / Mealy automaton / nondeterministic output function / observability / / /  
Reference Info. IEICE Tech. Rep., vol. 108, June 2008.
Paper #  
Date of Issue 2008-05-26 (CST) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF CST2008-4

Conference Information
Committee MSS  
Conference Date 2008-06-02 - 2008-06-03 
Place (in Japanese) (See Japanese page) 
Place (in English) Nagoyo University, Noyori Conference Hall 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Concurrent Systems, Discrete Event Systems, Hybrid Systems, etc. 
Paper Information
Registration To MSS 
Conference Code 2008-06-CST 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Modeling of Discrete Event Systems by Mealy Automata 
Sub Title (in English)  
Keyword(1) supervisory control  
Keyword(2) partial observation  
Keyword(3) Mealy automaton  
Keyword(4) nondeterministic output function  
Keyword(5) observability  
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1st Author's Name Toshimitsu Ushio  
1st Author's Affiliation Osaka University (Osaka Univ.)
2nd Author's Name Shigemasa Takai  
2nd Author's Affiliation Kyoto Institute of Technology (Kyoto Inst. Tech.)
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Speaker Author-1 
Date Time 2008-06-02 14:25:00 
Presentation Time 25 minutes 
Registration for MSS 
Paper # CST2008-4 
Volume (vol) vol.108 
Number (no) no.78 
Page pp.19-24 
#Pages 6 
Date of Issue 2008-05-26 (CST) 

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