Browsing by Author "Wójcik, Waldemar"

Filter results by typing the first few letters
Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    Compression of signals obtained from the fibre-optic flame monitoring system
    (Видавництво Національного університету "Львівська політехніка", 2002) Wójcik, Waldemar; Kotyra, Andrzej; Golec, Tomasz; Duk, Mariusz; Technical University of Lublin, Polan; Institute of Power Industry, Poland
    In the article, we present application of wavelet transform and Fourier transform in compressing signals obtained from the flame monitoring system. The results of compression are compared by function of relative error vs. compresion ratio.
  • Thumbnail Image
    Item
    Neural network controller for individual pulverised coal burner
    (Видавництво Національного університету "Львівська політехніка", 2002) Wójcik, Waldemar; Hotra, Zenon; Golec, Tomasz; Komada, Pawel; Kotyra, Andrzej; Smolarz, Andrzej; Technical University of Lublin, Poland; Lviv Polytechnic National University; Rzeszów University of Technology, Poland; Institute of Power Industry, Poland
    Burning pulverised coal in power boilers causes considerable emission of atmospheric pollution. In order to decrease it the combustion process itself has been modified, however at cost of side effects like: increased level of unburned coal particles in the ashes. There are tens of burners in a single power boiler and emission level measurements are made in flue gas duct, so the control based on such averaged and heavily delayed values often results ineffective. The neural controller of the pulverised coal burner attempts to resolve these problems. The clue is utilisation of fibre-optic system for monitoring of chosen zone of flame developed in Department of Electronics of Technical University of Lublin in subordinate control loop. The article contains description of controlled system and optical fibre measurement system as well as the idea and simulations of new control method.