Euler-Lagrange optimization method is exploited here to develop energy saving position control strategy valid for a.c. drives. The optimization principle respects copper losses and mechanical-friction losses during the maneuver interval. Boundary value problem for Euler-Lagrange equations is solved by Differential transformation method (DTM).

This work is supported by KEGA 015ŽU-4/2017 Digital technologies for machine building study programs as a part of strategy "Internet of Things".