| 摘要 |
<p>The present invention relates to vibration control method and device of a power train of an electric vehicle and more specifically, to the method and device which actively reduce vibrations generated in a power train through the passage of an uneven unit on the road surface with motor torque control. The present invention provides vibration control device and method of a power train of an electric vehicle made of; a vibration generation determination unit which processes an acceleration signal sensed by a vehicle acceleration sensor with a band pass filter and passes the acceleration signal in a constant frequency band only and calculates a change rate of a acceleration signal component of the frequency band and determines the generation of vibrations of a power train by the passage of a road surface uneven unit; and a motor reverse torque control unit which calculates correction torque amounts for vibration reduction of the power train and controls motor torque when the vibration generation determination unit determines that the vibrations of the power train is generated by the passage of an uneven unit on the road surface. [Reference numerals] (11) Vehicle acceleration sensor; (20) Vibration generation determination unit; (21) Band pad filter; (22) Vibration determination unit; (30) Motor reverse torque control unit; (40) Power train</p> |
