Electromechanical power steering system and method for operating an electromechanical power steering system for vehicles

摘要

Electromechanical power steering system for vehicles, comprising a steering wheel (1) for inputting a driver's request, a control device (12) and a servomotor (9), the control device (12) outputting a motor input signal (S) as a function of the driver's request, wherein means are provided which counteract changes in the motor effect as a result of the motor operation, a harmonic model describing at least harmonics of the servomotor (9) depending on parameters of the servomotor (9) being provided in the control unit (12), with the harmonics model depending on Parameters of the servo motor (9), a correction signal is output which is applied to the motor input signal (S), the correction signal counteracting the harmonics of the servo motor (9), characterized in that the output signal of the harmonic model via a filter to a first input of a Adder is supplied and which is used to determine the target torque of the servomotor (9) nde motor input signal is fed to a further input of the adder, an output of the adder representing the corrected motor input signal (S) of the servomotor (9) which is fed to it.