PECULIAR FEATURES OF MATHEMATICAL MODELING OF ELEMENTS OF THE BRUSH-COMMUTATOR UNIT OF THE ELECTRIC TRACTION MOTOR TAKING INTO ACCOUNT POSSIBILITIES OF THE CONTACT FAILURE Язык Английский Подробнее о PECULIAR FEATURES OF MATHEMATICAL MODELING OF ELEMENTS OF THE BRUSH-COMMUTATOR UNIT OF THE ELECTRIC TRACTION MOTOR TAKING INTO ACCOUNT POSSIBILITIES OF THE CONTACT FAILUREРусский