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Nowadays, the development of flexible and interoperable software platforms for industry is an important issue. The CCM model captures two paramount features of such platforms, as it combines component-based middleware (easy composition of new applications and maintainability) and the openness of the CORBA standard. Though there exist an implementation of CCM devoted to real-time systems (CIAO platform),...
The introduction of the workflow management provided companies with a flexible and robust approach to the supervision and execution of the business process. A further question that must be addressed is to help companies in the reuse of already developed workflows, thus saving investments and reducing time-to-market. This paper proposes a methodology aiming at providing reuse and modularity for production...
The goal of the presented research is to face the topic of reconfigurable control software development in a concrete fashion, i.e., by presenting a control software system development approach which has been used for a specific, although easy to be generalized, robotized manufacturing cell component. In particular, a methodology for the control software development of a planar robot (2-degrees of...
The application of distributed control systems is one of the main trends in current automation. Here, besides the programming of the control application code and its functional allocation to specific devices, an important point is the implementation of communication related code to exploit the underlying communication platform and realise the collaboration of the distributed control application code...
The real-time specification for Java (RTSJ) introduces a new memory model featuring some programming constraints that impede the "as-is" use of many well known design patterns. In this context, this paper describes and evaluates two design patterns, developed by the authors for distributed real-time Java software, that are able to overcome the limitations imposed by RTSJ. The first pattern,...
The increasing complexity of productive systems associated with the geographical dispersion of industries motivates new demands and the adoption of new design tools. In this context the purpose of this work is to introduce a new platform for distributed modeling and analyses of productive systems. The platform is based on Petri net as a modeling formalism and on the label-ring protocol for managing...
This paper presents the object-oriented platform-based design process for embedded real-time systems (SEEP). More specifically, it includes a case study to highlight the main design steps proposed by SEEP. Details regarding embedded system modeling and its transition to the programming level are presented. Moreover, it describes the embedded system generation and provides data obtained from the hardware...
The paper presents a layered architecture for real-time surveillance systems. Each layer includes objects that model the "real world" at a specific abstraction level, from raw data up to domain concepts. Each layer performs abstractions on perceptions coming from the lower layer and formulates timed hypotheses about domain objects. The failure of a hypothesis causes a perception to flow...
In the SIRENA project, the service oriented approach is used to connect devices using Web services or Universal Plug and Play (UPnP). In this environment, resources are scarce, and near real time behaviour and high reliability without user intervention is needed. At least in our context an interface design for service oriented architecture should not use a classical object oriented method decomposition...
Image generation, e.g., in computer tomographs, requires the use of sophisticated algorithms which are characterized (i) by a large variability to enable generation of different types of images and (ii) a strong need for dynamic reconfiguration to adapt image generation, e.g., to individual patients. On the application level, such characteristics are frequently scattered all over the code of the application...
The CLIPS project is a prospective approach of an implementation of a new type of automated production system. It aims to explore a range of academic and industrial promising propositions but not applied in the domain of industrial control system. For that it gathers industrials, R&D companies specialized in the field of component-based framework and researchers to define a methodology to deal...
In this paper an approach for the transparent use of real-time Java in control and automation is described. The proposed approach, which is in the context of the model integrated mechatronics paradigm, exploits the function block (FB) construct for the design model and the real-time Java specification for the implementation one. Specific interpreters allow for the automatic generation of FB types'...
This work describes the proposal of a set of mechanisms to be applied in distributed component-based systems to allow the development of real-time applications capable of offering dynamic guarantee for clients. The proposal aims to make the application server able to provide service completion according to all clients imposed timing constraints or the immediate request rejection. To implement these...
This paper describes formal modeling and verification of automation systems from the system engineering point of view. Reuse of model components is the key issue in order to bring the scientific modeling methodology into engineering practice. The reuse is achieved by the combination of modular modeling of automation systems with object-oriented description of models in UML style. This allows to benefit...
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