TY CONF TI COMBINED TWO-UNIT WEIGHT CONTINUOUS DOSING OF BULK MATERIALS KW weight dosing KW accuracy KW automatic regulation KW control KW mixtures KW block diagram JO OPERATOR EQUATIONS AND SOME RELATED ISSUES IN APPLIED MATHEMATICS AU Polyakov, S.I. PY 2026 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov