М. V. Kavalerov - Ph.D. (Eng.), Department of Automation and Telemechanics, Perm National Research Polytechnic University E-mail: mkavalerov@gmail.com N. N. Matushkin - Dr.Sc. (Eng.), Professor, Department of Automation and Telemechanics, Perm National Research Polytechnic University E-mail: mnn@pstu.ru