АВТОМАТИКА И ИНФОРМАТИКА – БРОЙ 3, 2019 г.

Print ISSN 0861-7562 Online ISSN 2683-1279 Some Possibilities for Robust Control of a Double-Operating Water Turbine S. Yordanov, K. Ormandzhiev, G. Mihalev Key Words Robust control; cross-flow water turbine; H∞-norm; system uncertainty; load disturbance. Abstract A mathematical model describing the operation of the cross-flow water turbine has been developed in this paper. A robust governor […]

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АВТОМАТИКА И ИНФОРМАТИКА – БРОЙ 2, 2019 г.

  Print ISSN 0861-7562 Online ISSN 2683-1279 Latent Heat of Fluids during their Phase Changes in Capillary Porous Materials M. Hadjiski, N. Deliiski, N. Tumbarkova Key Words Latent heat; fluids; crystallization; melting; vaporization; liquefaction; free water; bound water. Abstract Some basic characteristics and terms of the latent heat of solidification, fusion, vaporization, and liquefaction of […]

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АВТОМАТИКА И ИНФОРМАТИКА – БРОЙ 4, 2018 г.

Print ISSN 0861-7562  Online ISSN 2683-1279 Cyber Security of Industrial Control Systems M. Hadjiski Key Words Advanced control; cyber security; industrial control system; networked control; resilience; simulation. Abstract An overview of the problems, research efforts and recent results on cyber- security of Industrial Control Systems is provided. The interaction between the basic control sub-systems – […]

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АВТОМАТИКА И ИНФОРМАТИКА – БРОЙ 3, 2018 г.

Print ISSN 0861-7562 Online ISSN 2683-1279 Model-based ot Model-free Approach in Control M. Hadjiski Key Words Artificial intelligence; automatic control; data driven methods; machine learning; model-based control; model-free control. Abstract Classical model-free control methods, which still have extremely large application in industry are considered in historical perspective and in accordance with their advantages and disadvantages. […]

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АВТОМАТИКА И ИНФОРМАТИКА – БРОЙ 2, 2018 г.

Print ISSN 0861-7562 Online ISSN 2683-1279 Does Automation Become a Routine Engineering Discipline M. Hadjiski Key Words Artificial intelligence; automation; control theory; knowledge. Abstract During the second half of the twentieth century Automationwas doubtlessly one of the most dominant scientific and engineering directions. In control theory a number of original concepts with a fundamental importance […]

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АВТОМАТИКА И ИНФОРМАТИКА – БРОЙ 1, 2018 г.

Print ISSN 0861-7562 Online ISSN 2683-1279 Experimental Pilot Biogas Plant with Computer Monitoring abd Control System I. Simeonov, E. Chorukova, V. Akivanov, W. Lakow, S. Mihaylova Key Words Anaerobic degradation; biogas; pilot bioreactor; software sensors; LabVIEW; Beckhoff controller; system for monitoring and control. Abstract In this paper the pilot biogas plant of the Stephan Angeloff […]

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