S.D. Erokhin1, B.B. Borisenko2, A.S. Fadeev3, D.A. Kryukov4

1–3 MTUCI (Moscow, Russia)
4 MIREA-RTU (Moscow, Russia)
1 esd@mtuci.ru, 2 fepem@yandex.ru, 3 aleksandr-sml@mail.ru, 4 dm.bk@bk.ru