Proceedings ArticleDOI
Adaptable OPC-XML contracts taking into account network traffic
Mohamed Khalgui,X. Rebeuf,Francesco Zampognaro +2 more
- Vol. 1, pp 31-38
TLDR
This paper proposes to enrich the contract definition in order to define mandatory and optional quality of service, and proposes an observation mechanism for the network congestion detection.Abstract:
OPC-XML defines a standard method for accessing automation data in the industry field. This protocol relies on Web service communications allowing a great compatibility and a software/hardware independent definition. Nevertheless, this underlying protocol does not take into account temporal Quality of Service. Therefore, when a contract is defined between the client and the server, its execution has to be monitored to check if expected temporal properties are respected. In this paper, we propose to enrich the contract definition in order to define mandatory and optional quality of service. We propose an observation mechanism for the network congestion detection. Thanks to this information, it is possible to dynamically adapt the QoS to preserve the mandatory propertiesread more
Citations
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Book ChapterDOI
A SOA-based framework for building monitoring and control software systems
TL;DR: A SOA-based framework for building complex monitoring and control software systems used in modern process and factory automation today where production processes will span over all types of systems.
Journal ArticleDOI
An approach to implement a Programmable Logic Controller from real-time software components
Mohamed Khalgui,Xavier Rebeuf +1 more
TL;DR: This paper proposes a hybrid scheduling approach that combines static non-preemptive and online preemptive policies where the static policy allows the construction of sequencings that satisfy temporal constraints.
Journal ArticleDOI
A deployment methodology of real-time industrial control applications in distributed controllers
TL;DR: This paper proposes a hybrid scheduling approach allowing in particular to check according to specifications the temporal behavior of the application in devices and also on the communication network.
Journal ArticleDOI
Development of an OPC Client-Server Framework for Monitoring and Control Systems
Vu Van Tan,Myeong Jae Yi +1 more
TL;DR: The potential areas of the proposed framework and the redundancy strategies to increase the efficiency and reliability of the system are also represented according to the initial results from the system that was developed by the Visual Studio 2008 and OPC UA SDK.
Journal ArticleDOI
An Approach to Remote Monitoring and Control based on OPC Connectivity
TL;DR: An OPC connectivity-based approach to remote monitoring and control with integrated services to access real-time and history data from distributed control systems (DCSs) with the utilization of the OPC technology and XML to enterprise applications is presented.
References
More filters
Book
Discrete-Time Signal Processing
TL;DR: In this paper, the authors provide a thorough treatment of the fundamental theorems and properties of discrete-time linear systems, filtering, sampling, and discrete time Fourier analysis.
Journal Article
Quality of Service for Web Services
Saeed Araban,Leon Sterling +1 more
TL;DR: This paper takes the position that if Web Services are going to be considered as reusable commercial of-the-shelf (COTS) components, their Quality of Service (QoS) needs to be expressed explicitly and measured independently.
Proceedings ArticleDOI
A dynamic quality of service middleware agent for mediating application resource usage
TL;DR: New developments in the design of the dynamic QoS manager (DQM) are discussed and results showing DQM performance with both real and synthetic applications are presented.
Proceedings ArticleDOI
Network-based controller adaptation based on QoS negotiation and deterioration
Y. Tipsuwan,Mo-Yuen Chow +1 more
TL;DR: A numerical and an experimental simulation of a network-based controlled DC motor are used in this paper to illustrate the effectiveness of the proposed real-time application gain adaptation to compensate for QoS variations and deterioration.
Applying Feedback Control to QoS Management
TL;DR: This paper explains the approach of the Feedback Control recently applied in computing science, and illustrates some related works and a model of middleware for QoS-control, that represents a meaningful example in the direction of the design of an adaptation-based architecture.