Method for monitoring electric power steering system e.g. electric power steering rack-drive system, of vehicle, involves outputting signal if limit rotational torques assigned to preset number of total rotational torques are exceeded

摘要

The method involves determining a current average total torque from values for current total rotational torque related to steering angle velocity combination. A comparison total torque related to the assigned steering angle velocity combination is determined by a processor (13) from a sum of current average total torque plus an acceptable deviation. The total torque is compared with a limit rotational torque for the assigned steering angle velocity combination. A signal is output if limit rotational torques assigned to preset number of comparison-total rotational torques are exceeded. Independent claims are also included for the following: (1) a device for monitoring an electric power steering system of a vehicle (2) an electric power steering system.