M.A. Romashchenko1, N.V. Astahov2, D.V. Vasil’chenko3, R.S. Sukhomlinov4

1-4 FSBEI of HE “Voronezh State Technical University” (Voronezh, Russia)

1 kipr@vorstu.ru; 2 kipr@vorstu.ru; 3 shadow951@bk.ru; 4 sukhomlinov03@mail.ru