Task Specific Trajectory Profile Selection for Energy Efficient Servo Drive Movements

The energy demand of applications using inverter controlled electrical servo drives is considerably dependent on the applied trajectory profiles. In this paper, the improvement potential in supply energy consumption is analyzed with respect to the standard servo controller functionality. The optimal choice of trajectory profiles and execution times for point-to-point movements offers distinct energy savings. From the presented results, a number of general trajectory parametrization advices of even roughly known system characteristics can be derived. Even with little effort and without knowledge of exact system parameters, considerable energy savings are achievable.