A system for arc steel melting furnace arcs power control with fuzzy corrector is proposed. Digital model of the system was created and numerical simulation under influence of deterministic and random disturbances of arc lengths were conducted. Results of simulations are shown, which prove improvements of dynamic and static indices of arc power regulation. Streszczenie. Praca przedstawia system...

The production of synthetic iron castings in Russia comprises 50% all alloys produced; therefore, increasing their smelting efficiency is an urgent task the industry. This process depends primarily on industrial frequency induction crucible furnaces using acid lining. In present study, properties quartzite, which forms basis such a lining, were investigated. An analysis proposed variants for ch...

Introduction: It is important that biological and health effects from the induction of currents and fields in the body by extremely low frequency (ELF) fields are fully explored to determine the effects produced at the molecular, cellular and organ levels. The objective of this study was to evaluate the intensity of ELF electromagnetic fields and its probable relationship with hematological cha...