VIBRATION REDUCTION CONTROL SYSTEM FOR ELECTRICALLY DRIVED VEHICLE AND VIBRATION REDUCTION METHOD FOR IT

摘要

1. A vibration suppression system for an electric drive vehicle having an electric drive motor as a power source, comprising: a rotational speed detector for detecting a rotational speed of a motor; a target motor torque calculation module for calculating a target motor torque in response to a driver request; a first target torque calculation unit for calculating a first target torque by a direct coupling (F / F) operation using a transfer characteristic the characteristics between the input torque and the engine speed in response to the target torque of the motor; - the second target torque calculation module for calculating the second target torque through a feedback operation (F / B) using the transfer characteristic between the input torque and speed of the motor based on the speed of the motor; - mechanism for specifying commands of the motor torque by summing the first target torque and the second target torque in order to obtain the value of the motor torque command for the motor; - a determination mechanism to determine whether or not the model GP (s) of the transfer characteristic between the input torque and the engine speed matches the actual transfer characteristic; and - a vibration suppression mechanism for setting the target motor torque as a command of the motor torque for a period of time in which the transfer characteristic between the input torque and the engine speed