TY JOUR TI ROBUST CONTROL BY SERVO DRIVE WITH NON-RIGID LOAD WITH H-INFINITY NORM LIMITATION KW norm H∞ KW servo drive KW internal perturbations KW parametric identification JO Vestnik of Astrakhan State Technical University. Series: Marine engineering and technologies AU Elistratov, V.. AU Ilina, A.. PY 2016 IS PB Astrakhan State Technical University