TY JOUR TI THE STUDY OF THE MOTION OF THREE-LINK ROBOT WITH TWO-AXIS JOINTS ON A ROUGH SURFACE KW three-link crawling robot KW friction support KW control of coefficient of friction KW motion steps KW experimental stand JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Yacun, S.F. AU Vorochaeva, L.Y. AU Mal'chikov, A.V. AU Politov, E.N. PY 2018 IS 3 PB Belgorod State Technological University named after V.G. Shukhov