Wydział Elektrotechniki, Elektroniki, Informatyki i Automatyki / Faculty of Electrical, Electronic, Computer and Control Engineering / W2
Stały URI zbioruhttp://hdl.handle.net/11652/2
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Pozycja Tomography MCMC method exploration software package(Wydawnictwo Politechniki Łódzkiej, 2009) Matusiak, Bartosz; Grudzień, Krzysztof; Romanowski, Andrzej; Jackowska-Strumiłło, LidiaStatistical methods such as Monte Carlo Markov Chain (MCMC) coupled with Bayesian approach proved its usefulness to the Electrical Capacitance Tomography (ECT) inverse problem solution. However, this methodology is very sensitive to the values of method parameters. The dedicated tool for investigation of this statistical method and for algorithm adjusting, testing, verification and optimization is proposed in the paper.Pozycja Measurement of dynamic pulsations in bulk solid during silo discharging using ECT method(Wydawnictwo Politechniki Łódzkiej, 2009) Grudzień, Krzysztof; Chaniecki, Zbigniew; Niedostatkiewicz, Maciej; Romanowski, Andrzej; Sankowski, DominikPaper will focus on the results of tests with the slender cylindrical silo emptied both gravitationally and in controlled manner. The influence of the initial density, wall roughness, height and velocity on the emptying process will be presented. During tests values of the vertical and horizontal accelerations on the silo wall were measured, the effect of the outlet velocity and level of the dynamic effects were compared. Results will be presented in the form of continuous graphs, which allow to analyse the entire process in simpler way comparing to tomographic images form. It is a better form of presentation in order to work out settings for process control, as well.Pozycja Monitoring of solids behaviour during gravitional flow in rectangular silo(Wydawnictwo Politechniki Łódzkiej, 2009) Niedostatkiewicz, Maciej; Chaniecki, Zbigniew; Grudzień, Krzysztof; Romanowski, Andrzej; Banasiak, Robert; Betiuk, JakubThis paper is focused on the application of Electrical Capacitance Tomography (ECT) to gravitational flow of bulk solid in rectangular silo investigation. In order to measure the materials distribution inside a vessel, a dedicated, spatial 16 electrode sensor is designed. Reconstructed images are presented in 3D domain space. The investigated silo model consists of rectangular bin and a cone-like hopper section. The flow behaviour of material (friable sand) is studied for two silo model configurations having different lower section slopes. The slope angle is a silo geometrical parameter affecting the type of the flow regime - mass or funnel type.