A beachelor thesis at the zuerich university of applied science (ZHAW) has been made by M. Bill and L. Wyssling prospecting the torque ripple compensation on the field oriented control of the HDrive17. This compensation allows to increase the path accuracy during positioning. The topic was theoretically analyzed in Matlab Simulink and implemented on a HDrive17 Servodrive. Furthermore a laser projector was build to show the improvement while projecting a laser beam along a printed trajectory on a paper.
The ripple current compensation is increasing the trajectory accuracy by almost 50% in movements with a velocity at around 50 RPM.