| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve ride quality for vehicle body vibration without using an acceleration sensor, without adding and changing hardware such as an active suspension and variable characteristics of an axle spring. <P>SOLUTION: An electric vehicle runs by driving two sets of wheels through a driving device in which each of two electric motors 61 mounted on a bogie 6 includes a gear. In an electric vehicle control device for indirectly controlling vibration suppression of a vehicle body by suppressing vertical vibration of the bogie by overlapping torque variation in opposite directions with two electric motors, vibration suppression control of the electric vehicle control device is designed based on a vertical vibration characteristic of the bogie, when vibration torque in opposite directions is applied on two electric motors, and a vibration characteristic of rotation speed difference of two electric motors, when vibration torque in opposite directions is applied on two electric motors, and the vibration of the bogie is suppressed by using the information of the rotation speed difference of the two electric motors. <P>COPYRIGHT: (C)2013,JPO&INPIT |
