Setting arrangement, method and computer program product for setting a mode of operation of an electric motor for an electromechanical power steering system

摘要

The invention relates to a setting arrangement (10) for setting the mode of operation of an electric motor (12) in an electromechanical power steering system (11), the electric motor (12) comprising a rotor (13) on a rotor shaft (32) and a stator (14) and the power steering (11) comprises a worm gear (15) with a worm shaft (16) and a worm wheel (17) meshing with the worm shaft (16) and a one-piece drive shaft (18), the rotor shaft (32) and the worm shaft ( 16) Components of the drive shaft (18) are, having a motor phase current determination unit (19) for determining motor phase currents of the electric motor (12), a rotor angle calculation unit (20) for calculating a rotor angle value using the determined motor phase currents, a rotor angle determination unit ( 21) for determining a reference rotor angle value by means of a rotor position angle sensor (22), a compensation value calculation unit (23 ) for calculating a compensation value using the rotor angle value, the reference rotor angle value and the determined motor phase currents, and a modification unit (24) for modifying the motor phase currents using the compensation value for a wobble compensation of the drive shaft (18). The invention also relates to a vehicle (34), a method for setting the operating mode of an electric motor (12) in an electromechanical power steering system (11), a computer program product (30) and a non-volatile storage medium (31) with a computer program product (30) stored thereon.