Modeling Constraint-based Processes: a Supervisory Control Theory Application.

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Bibliographic Details
Title:	Modeling Constraint-based Processes: a Supervisory Control Theory Application.
Authors:	Portela Santos, Eduardo Alves¹ eduardo.portela@pucpr.br, Vieira, Agnelo Denis¹ agnelo.vieira@pucpr.br, Schaidt, Sauro¹ sauro.schaidt@pucpr.br, de Freitas Rocha Loures, Eduardo¹ eduardo.loures@pucpr.br
Source:	Computer Science & Information Systems. Oct2014, Vol. 11 Issue 4, p1229-1247. 19p.
Subjects:	Control theory (Engineering), Declarative programming languages, Constraint programming, Supervisory control systems, Robots
Abstract:	Constraint-based processes require a set of rules that limit their behavior to certain boundaries. In these processes, the control flow is defined implicitly as a set of constraints or rules, and all possibilities that do not violate any of the given constraints are allowed to be executed. The present paper proposes a new approach to deal with constraint-based processes. The proposed approach is based on Supervisory Control Theory, a formal foundation for building controllers for discrete-event systems. The controller proposed in this paper monitors and restricts execution sequences of activities such that constraints are always obeyed. We demonstrate that our approach may be used as a declarative language for constraint-based processes. In order to provide support for users of such processes and to facilitate the using of our control approach, we offer a set of constraints modeled by automata. This set encompasses the constraints frequently needed in workflow system. [ABSTRACT FROM AUTHOR]
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Database:	Engineering Source

Description
Abstract:	Constraint-based processes require a set of rules that limit their behavior to certain boundaries. In these processes, the control flow is defined implicitly as a set of constraints or rules, and all possibilities that do not violate any of the given constraints are allowed to be executed. The present paper proposes a new approach to deal with constraint-based processes. The proposed approach is based on Supervisory Control Theory, a formal foundation for building controllers for discrete-event systems. The controller proposed in this paper monitors and restricts execution sequences of activities such that constraints are always obeyed. We demonstrate that our approach may be used as a declarative language for constraint-based processes. In order to provide support for users of such processes and to facilitate the using of our control approach, we offer a set of constraints modeled by automata. This set encompasses the constraints frequently needed in workflow system. [ABSTRACT FROM AUTHOR]
ISSN:	18200214
DOI:	10.2298/CSIS131029026S