Browsing by Author "Batchkova I."

Now showing 1 - 8 of 8
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    A cyber-physical approach for development of Vacuum Control System on the EBMR plant
    (2023-01-01) Tzakova D.; Ivanova T.; Belev Y.; Batchkova I.
    One of the great challenges of the Fourth Industrial Revolution is the transition to Cyber-Physical Systems, which allows for a high degree of adaptability, autonomy, reliability, usability and security. Cyber-Physical Systems-based control and automation is one of the possible ways to implement a smart factory. The cyber-physical approach, proposed in this paper is based on to the standard for Batch Control IEC-61512 (also known as S88) and the standard for development of distributed process measurement and control systems - IEC-61499. The suggested approach is implemented for development of vacuum control system, which is a part of the electron beam melting and refining plant producing metals and alloys with a high degree of purity.
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    Combining IEC 61499 and ISA S88 for batch control
    (2009-01-01) Ivanova D.; Batchkova I.; Panjaitan S.; Wagner F.; Frey G.
    Modeling of batch process control over several hierarchical layers is proposed in ISA S88, independently of a concrete implementation. IEC 61499, describes models to implement distributed control systems. This contribution proposes to combine the concepts of ISA S88 for hierarchical design with the models of IEC 61499 for distributed implementation. To formally describe and analyze the control sequences, Signal Interpreted Petri Nets are utilized. From the verified description, the implementation is derived using pre-defined IEC 61499 function blocks either by hierarchical aggregation of the blocks or by using a scheduler. The scheduler approach allows re-configuration of the sequences without altering the implemented controller. The proposed approach offers analyzable formal models, re-usable basic components, and re-configurable distributed implementation. © 2009 IFAC.
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    Development of Asset Administration Shell for the components of EBMR plant
    (2023-01-01) Ivanova T.; Gocheva D.; Batchkova I.; Belev Y.
    The use of reference architectures and frameworks is an important prerequisite for dealing with the complexity, diversity and heterogeneity of cyber-physical systems. One of the most popular architectures is RAMI 4.0, suggested by the Industry 4.0 Working Group. According to RAMI 4.0, the Asset Administration Shell (AAS) is a digital copy of assets, an implementation of the digital twin for Industry 4.0. The paper represents a semantic approach for development of AAS, which presents the data model through ontology. The semantic model allows for the presentation of facts, data schemes and meta-data in a unified way, using a global identification scheme. An example from the development of AAS for I4.0 components of an EBMR plant illustrates the approach.
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    Development of multi-agent control systems using UML/SysML
    (2008-12-01) Antonova I.; Batchkova I.
    The object-oriented methodology is insufficient for developing agent-based control systems because it can not naturally represent the essential characteristics of agents, such as autonomous behavior, temporal continuity and cooperativety. The approach presented in this paper aims to extends UML for development agent-based control systems based on its profile for System Engineering - Sys ML, the upcoming standard for distributed control systems IEC61499 and the unified FIPA communication protocols. The new approach is demonstrated with a case study of FESTO distribution station. © 2008 IEEE.
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    Dynamic reconfigurability of control systems using IEC 61499 standard
    (2013-01-01) Batchkova I.; Popov G.; Karamishev H.; Stambolov G.
    The reconfigurable control systems are able to rearrange dynamically the system elements in order to accommodate the failure events and the new requirements. Reconfigurability of control systems is highly related to satisfying the requirements for interoperability, configurability, integrability, modularity, customization, scalability, convertibility, diagnosability and portability. All these features of control system are reachable using the reference architecture and models provided in the IEC 61499 standard. The event-driven structure of the models and applications supports the reconfigurability but there is no recommended solution to this issue, given in the standard. This paper presents and discusses an approach for model driven development of reconfigurable control systems based on IEC 61499 standard. For achieving dynamic reconfigurability of control application the concepts of management resource and device are defined and applied. The proposed development life cycle including design and implementation of control system is simplified through the software engineering concept of model driven architecture and model driven engineering (MDA/MDE), based on development of reusable platform independent models (PIM) and their transformation to different platform specific models (PSM), depending on the selected device. The suggested approach is illustrated with a case study for model driven development of reconfigurable control system for FESTO processing station S-BE-M, to which two new modules are developed and added in order to test different reconfiguration scenarios. Copyright © 2013 IFAC.
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    Holonic approach for system design of reconfigurable manufacturing systems
    (2004-01-01) Batchkova I.; Popov G.; Stambolov G.
    The increasing global competition required the manufacturing enterprises to provide manufacturing systems with both high flexibility and high productivity functions. This is possible by using a new concept for creating of machine tools and systems namely the reconfigurable manufacturing systems (RMS). Intelligent Holonic approach is used to support the advanced hybrid system organization. The paper proposes and discusses new holonic reference architectures for reconfigurable manufacturing systems, which support the dynamically reconfiguration through a combination of the autonomy of reaction to disturbances with the co-operative tendencies found by centralized on-line scheduling holon. The suggested reference model is used to design a prototype of reconfigurable manufacturing system for processing of automotive diesel cylinder heads.
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    Integrated control system for electron beam processes
    (2018-04-05) Koleva L.; Koleva E.; Batchkova I.; Mladenov G.
    The ISO/IEC 62264 standard is widely used for integration of the business systems of a manufacturer with the corresponding manufacturing control systems based on hierarchical equipment models, functional data and manufacturing operations activity models. In order to achieve the integration of control systems, formal object communication models must be developed, together with manufacturing operations activity models, which coordinate the integration between different levels of control. In this article, the development of integrated control system for electron beam welding process is presented as part of a fully integrated control system of an electron beam plant, including also other additional processes: surface modification, electron beam evaporation, selective melting and electron beam diagnostics.
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    Model-driven development of agent-based cyber-physical systems
    (2019-11-01) Batchkova I.; Ivanova T.
    In order to achieve its goal in using intelligent adaptive and predictive technical systems with self-X functions and cognitive information processing in continuous interaction with environment, the Industry 4.0 initiative implies integration of Cyber-Physical Systems (CPS), the Internet of Tilings (IoT) and cloud computing leading to what is called ``smart factory``. This, in turn, faces the CPS with new challenges in terms of increasing the degree of distribution, autonomy, mobility, communication and security of the systems and their components, as well as expanding their functionality in the direction of data analytics, information and knowledge extraction, and increasing their intelligence. The main aim of the paper is to define a software process model for model-driven development of agent-based CPS using the Organization-based multi-agent software engineering process framework O-MaSE. CPS are developed as layer-based Multi Agent Systems (MAS) that enable the division of system elements into levels, reduce the coupling between modules and facilitates abstractions as well as the distributions of responsibilities. The suggested approach is illustrated with an example for model-driven development of pilot batch reactor as an agent-based CPS based on O-MaSE methodology and agentTool III.