TY JOUR TI MOTION INVESTIGATION OF SWING JIB CRANE, TROLLEY AND LOAD AT ACCELERATION AND STEADY STATE OF DRIVE ELECTROMOTORS OPERATION KW JO Bulletin of Bryansk state technical university AU Selenskaya, T.. AU Selenskiy, E.. AU Yastrebov, D.M. PY 2017 IS 2017 PB Bryansk State Technical University