Прегледај по Аутор "Kovač, Pavel"

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    CREATE SISO STATE SPACE MODEL OF MAIN SPINDLE FROM ANSYS MODEL
    (Faculty of Technical Sciences, Department for Production Engineering, 2015) Košarac, Aleksandar; Zeljković, Milan; Mlađenović, Cvijetin; Živković, Aleksandar; Kovač, Pavel
    This paper shows identification of dynamic characteristics of working unit module main spindle, based on application of APDL ANSYS and MATLAB software. Single Input Single Output (SISO) state space MATLAB model will be developed from an APDL ANSYS main spindle model. The first step in defining the state space model is to define the eigenvector elements for all modes for only the input and output degrees of freedom. The next step is analysing the each mode contribution and sort them from the largest to smallest. One of the modal reduction technique is then applied, and modes with smallest contribution are simply truncated.
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    RESEARCH ABOUT POSSIBILITY FOR INCINERATION IN FLUIDISED BED OF WASTE MATERIALS PRODUCED BY PROCESSING OF USED LUBRICATING OILS
    (2018) Simić, Stojan; Kovač, Pavel; Sovilj-Nikić, Sandra; Kandeva, Mara; Kalitchin, Zhetcho; Ješić, Dušan; Golubović, Dušan
    In acid refining processes of used lubricating oil with sulphuric acid it is characteristic a creation of certain amount of waste which has to be disposed in an environmentally friendly way. Waste materials produced by acid refining process are: residue after the filtration process and resinousasphalt substance technically commonly named acid gudron. The paper presents the research results obtained in the experimental plant designed for the treatment of waste produced by refining of used lubricating oils sampled from the dump. With appropriate adjustment of process parameters, the results obtained during experimental tests in perspective would be a good basis for design of large capacity plants for treatment of waste materials such or similar physical and chemical characteristics