ELECTRIC VEHICLE CONTROL METHOD AND ELECTRIC VEHICLE CONTROL DEVICE

Japanese Patent JP2023142012

A

To provide an electric vehicle control method and an electric vehicle control device capable of reducing a sense of discomfort felt by an occupant due to variations in the dead zone interval lengths of driving systems in an electric vehicle including a plurality of driving motors.SOLUTION: An electric vehicle control method includes: basic torque distribution processing for determining basic torque command values for respective driving motors; and vibration damping processing for correcting each basic torque command value to suppress the vibration of a driving force transmission system, thereby obtaining a corrected torque command value. In the vibration damping processing, a damping coefficient in a model response related to driving force transmission in each driving system is set as a parameter which takes a reference damping coefficient when the driving system is in an interval other than a dead zone interval, and which takes a dead zone damping coefficient different from the reference damping coefficient when the driving system is in the dead zone interval. It is estimated whether each individual driving system is in the dead zone interval. In the driving system in the interval other than the dead zone interval, the amount of correction for the basic torque command value is set on the basis of the reference damping coefficient. In the driving system in the dead zone interval, the amount of correction for the basic torque command value is set on the basis of the dead zone damping coefficient.SELECTED DRAWING: Figure 11

MIZOGUCHI SHUTA
SAWADA AKIRA

JP2022048661A

October 05, 2023

March 24, 2022

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NISSAN MOTOR

B60L15/20; H02P5/46

Patent Attorney Corporation Goto Patent Office

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