Motor control strategy for electric shift-by-wire system

Abstract

Disclosed herein is a motor control strategy of an electric shift-by-wire (SBW) system and is a method of performing PWM waveform simulation control in order to solve an impact/noise occurrence problem in a motor control process. A method of controlling the electric motor of an electric SBW system includes determining whether a current stage and a target stage are identical, rotating the motor in the direction of the target stage when the current stage and the target stage are not identical, performing motor OFF control when the current stage and the target stage are identical, performing reverse driving duty control when a difference between the current position and target position of the motor is less than a first setting value, and stopping the motor when the difference between the current position and target position of the motor is less than a second setting value.

Dependencies are inferred from the claim text.