| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a current controller for an electric power steering device suppressing vibration generated by high-frequency disturbance voltage while reducing the influence of follow-up characteristics of a current flowing to a motor from a target current which is a target of current control down to the level for sufficiently ensuring phase margin and gain margin of an entire electric power steering system and not losing stability. <P>SOLUTION: The current controller for the electric power steering device suppresses the vibration generated by the disturbance voltage. A resonance phase compensator 2, which is notch filter characteristics where a frequency of the disturbance voltage is coincident with a notch frequency, is inserted by transmission characteristics of a loop for determining a current flowing from the disturbance voltage to a motor in a feedback loop for making a current detection value follow to a target current value. <P>COPYRIGHT: (C)2011,JPO&INPIT |
