Patent ID: 9143064
Filing Date: 2015-09-22
Classification: B62D,H02P

Abstract:
1. A control method of a control apparatus for an electric power steering apparatus that calculates a steering assist torque command value based on a steering torque generated in a steering shaft and a velocity by a steering assist torque command value calculator, calculates each-phase current command values from said steering assist torque command value by a current command value calculating section, and controls a motor that provides a steering mechanism with a steering assist torque based on current control values calculated from said each-phase current command values and each-phase current values of said motor by a controller, the method comprising: selectively arranging filters, which have a characteristic that offsets said motor and each-phase inductance and resistance characteristics of said control apparatus, on at least one phase pathway of a plurality of phase pathways between a PI control section and a PWM control section at an output of the PI control section, based on said motor and each-phase inductance and resistance characteristics of said control apparatus; conforming said motor and said each-phase inductance and resistance characteristics of said control apparatus, and obtaining a desired dynamic characteristic by converting said each-phase inductance and resistance characteristics with said filters; and reducing operating noises and vibrations due to the difference in the peak value of the phase current.