Przeglądanie według Temat "mathematical model"

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Solving some technical problems with using numerical simulations
(Wydawnictwo Uniwersytetu Rzeszowskiego, 2010) Kwiatkowski, Bogdan; Pękala, Robert
In the paper two technical issues described by mathe-matical models are presented. The first problem concerns the mathematical modeling of the electromagnetic field in laminated ferromagnetic cores. Algorithms of transient and steady-state are presented. The phenomenon based on the connection core condition and magnetizing current is investigated too. The second problem involves electromagnetic field modeling in high-current vacuum switch. Some theoretical problems dedicated to arcquenching in vacuum switches are described. Provided tests show influence of switch shape on field di¬stribution to obtain sustained vitality of vacuum switch. Additionaly, for both issues the mathematical model verification with using real objects are considered.
THE CHANGES OF AIR GAP IN INDUCTIVE ENGINES AS
(DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS - American Institute of Mathematical Sciences, 2007) Twaróg, Bogusław; Pękala, Robert; Bartman, Jacek; Gomółka, Zbigniew
The method of analyzing vibration of electric engines or electro-magnetic generators proposed in the work is based on the analyzing of course current of load. In considerations were used the method based on specialized mathematics model and advanced calculation technique. It allow to create of patterns for artifcial neural networks. These patterns represented different states of machine for the diagnostic and they are enable to define precisely the changes caused by failure. Received experiments showed that the designed architecture of the net enables to achieve good properties of generalization correct answer for entrance date which weren't a part of training process.