Patent ID: 10173717

Abstract:
[Problem]An object of the present invention is to provide an electric power steering apparatus that can accurately suppress a vibration, a noisy sound and so on whose vibration source is a power spectrum occurring from a relationship between an operation period of torque control and an operation period of current control, and which occur regardless of presence or absence of a mechanical resonance.[Means for solving the problem]In an electric power steering apparatus that comprises a torque control section which calculates a current command value based on at least a steering torque and a current control section which controls a motor current flowing to a motor based on the current command value, an operation period of the torque control section is longer than or equal to an operation period of the current control section, and the current control section comprises a specific frequency band eliminating section that attenuates at least one frequency component having a frequency obtained by multiplying about half of an operation frequency of the torque control section by a natural number in the current command value.