TY JOUR TI Methods of optimization of technical maintenance of automation systems KW the automation system KW maintenance services KW objective function KW managed parameters KW constraints KW methods of optimization KW movement of trains KW technical servicing of the optimal frequency of works KW time redundancy KW the criteria of reliability KW technical and economic criteria JO Transport automation research AU Shamanov, V.. PY 2016 IS 2 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"