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Dynamic Reconfiguration of Intelligence for High Behaviour Adaptability of Autonomous Distributed Discrete-Event systems

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IEEE ACCESS 2019年 7卷 35487-35498页

作者： Gharsellaoui, Hamza Khalgui, Mohamed Jinan Univ Sch Intelligent Syst Sci & Engn Zhuhai Campus Zhuhai 519070 Peoples R China Taif Univ Khurmah Univ Coll At Taif 26571 Saudi Arabia Carthage Univ Natl Engn Sch Carthage ENICarthage Ariana 2035 Tunisia Natl Inst Appl Sci & Technol INSAT Tunis 1080 Tunisia

This paper deals with the intelligence adaptation of distributed real-time embedded control systems when scenarios of reconfiguration happen in their hardware or software level. The reconfiguration process is a composition of controllers reconfiguration by adding/deleting or updating tasks and intelligence reconfiguration by adding/deleting and updating the rule base. The system architecture is composed of an application layer implemented as the real-time periodic tasks and an intelligence layer for autonomous and adaptive control behavior. In this research work, a rule-based system is used as the artificial intelligence component, where we propose to optimize the inference process by splitting the rule base into two sub-bases;the effective one and the general meta base. With this facility, the coordination in decision making for the distributed platform and system Quality of Service (QoS) in complex and robust system implementation should be faced by new strategies and correct policies. In this sense, we propose a new protocol for the coordination in the two levels of the reconfiguration process to get correctness in the system results. Dealing with performance, we propose to supervise the intelligence QoS of the whole distributed system. Also, we present the correctness of the coordination between the different decisions by the field of the coordination factor. An implementation of the paper contribution with Drools as an integrated rule-based system framework to RTDroid and a discussion of the inferring time and the memory consumption are presented in this paper.

关键词： real-time embedded control systems intelligence reconfiguration rule-based system intelligence QoS coordination factor intelligence impact

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The one-shot task model for robust real-time embedded control systems

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IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS 2008年第3期4卷 164-174页

作者： Lozoya, Camilo Velasco, Manel Marti, Pau Tech Univ Catalonia Dept Automat Control Barcelona 08028 Spain

embedded control systems are often implemented in small microprocessors enabled with real-time technology. In this context, control laws are often designed according to discrete-time control systems theory and implemented as hard real-time periodic tasks. Standard discrete-time control theory mandates to periodically sample (input) and actuate (output). Depending on how input/output (I/O) operations are performed within the hard real-time periodic task, different control task models can be distinguished. However, existing task models present important drawbacks. They generate task executions prone to violate the periodic control demands, a problem known as sampling and latency jitter, or they impose synchronized I/O operations at each task job execution that produce a constant but artificially long I/O latency. In this paper, the one-shot task model for implementing control systems in embedded multitasking hard real-time platforms is presented. The novel control task model is built upon control theoretical results that indicate that standard control laws can be implemented considering only periodic actuation. Taking advantage of this property, the one-shot task model is shown to remove endemic problems for real-time control systems such as sampling and latency jitters. In addition, it can minimize the harmful effects that long I/O latencies have on control performance. Extensive simulations and real experiments show the feasibility and effectiveness of the novel task model, compared to previous real-time and/or control-based solutions.

关键词： aperiodic observer periodic task model real-time embedded control systems sampling and latency jitter

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ASPECT-BASED METHODOLOGY FOR real-time embedded control systems DESIGN

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IFAC Proceedings Volumes 2007年第22期40卷 249-254页

作者： Rédha Hamouche Rémy Kocik COSI Lab Groupe ESIEE Cite Descartes-BP 99- 2 Blaise Pascal – 93162 Noisy-Le-Grand Cedex FRANCE

Designing real-time embedded control systems follows usually a V-process and requires various languages and tools. Each language/tool provides a design methodology, and defines its own terminology and semantic. This lack of consistency leads usually to a disconnected design process where the transformation of models is usually performed manually. Thus, errors may be introduced in the models. Correcting these errors lengthens the design lifecycle and time to market. In this paper, we propose a new methodology which aims to fill the gaps due to the lack of consistency by unifying the terminologies and semantics used, and reduces the time spent in translation and debugging. This methodology does not propose a new global language which is far from each domain concerns and where the leaning curve is longer. The goal is rather to provide a multi-facet design using aspect and component approaches, and relying on an unified system metamodel in order to link the semantic differences between control and real-time computing languages and tools.

关键词： real-time embedded control systems design methodology aspect components metamodeling MDA

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Multi-Facet design methodology for real-time embedded control systems

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IFAC Proceedings Volumes 2006年第21期39卷 14-20页

作者： Rédha Hamouche Rémy Kocik Mongi Ben Gaïd COSI Lab Groupe ESIEE Cite Descartes-BP 99-2 Blaise Pascal-93162 Noisy-Le-Grand Cedex

The design of real-time embedded control systems follows usually a V-process. Several actors belonging to control and computer science area are involved, and various languages and tools, with different tenninologies and semantics, are used. This heterogeneity introduces lacks of consistency in the system design and leads usually to a disconnected design process where the transformation of models is needed between process steps. These transformations are usually performed manually. Thus, errors may be introduced in models. and performance and stability of the control system may be affected. Correcting these errors lengthens the design lifecycle and time to market (Kocik and Sorel, 2004). In this paper, we propose a new methodology which aims to fill the gaps due to the lack of consistency by unifying the terminologies and semantics used and reduces the time spent in translation and debugging. It provides a multi-facet design relying on an unified system metamodel in order to link the semantic differences between control and real-time computing languages and tools.

关键词： real-time embedded control systems design methodology metamodeling components aspect MDA

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MIREA: Component-based Middleware for Reconfigurable, embedded control Applications

MIREA: Component-based Middleware for Reconfigurable, Embedd...

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IEEE International Conference on control Applications Part of 2010 IEEE Multi-Conference on systems and control

作者： Kwon, Jagun Hailes, Stephen UCL Dept Comp Sci London WC1E 6BT England

ISBN: (纸本)9781424453610

This paper presents the MIREA middleware and its support for reusable, reconfigurable and hierarchical design of complex control systems. We review the middleware's component model, key concepts and services, and its support for C++ plus its ability to integrate seamlessly with third-party libraries such as the National Institute of Standards and Technology (NIST)'s real-time control systems (RCS) library, which has been successfully used in many U.S government-driven intelligent control projects. We also present a case study based on control of our flock of autonomous UAV helicopters. This represents a challenging deployment scenario, but one for which the 4D/RCS architecture is designed and is well suited. Consequently, we discuss our approach to control using a fusion of RCS as a means of architecting a real time control system and MIREA as a means of realising that architecture. Our progress to date suggests that MIREA is indeed well suited as a middleware facilitating the construction of efficient, lightweight, and scalable real-time embedded control systems.

关键词： 4D/RCS architecture C++ MIREA middleware NIST National Institute of Standards and Technology RCS library U.S government-driven intelligent control projects autonomous UAV helicopters complex control systems component-based middleware control engineering computing helicopters hierarchical design intelligent control middleware object-oriented programming real-time control systems library real-time embedded control systems real-time systems reconfigurable control remotely operated vehicles reusable design third-party library

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