CONTROL METHOD FOR ELECTRIC VEHICLE, AND CONTROL DEVICE

WIPO Patent Application WO/2018/220805

A1

This control method for an electric vehicle comprises: calculating a first torque command value by a feedforward arithmetic operation based on a motor torque command value; detecting a rotational angular speed of a first motor; and estimating the rotational angular speed of the first motor on the basis of the first torque command value by using a vehicle model Gp(s) that simulates the transmission characteristics from torque input to a first drive wheel to the rotational angular speed of the first motor. The method further includes: calculating a second torque command value from the deviation between the detected value of the rotational angular speed of the first motor and the estimated value thereof by using a filter Hf(s)/Gp(s) that is composed of the reverse characteristics of the vehicle model Gp(s) and a bandpass filter Hf(s) with a center frequency of a frequency close to the torsional vibration frequency of the vehicle; and controlling the torque of the first motor in accordance with a front final torque command value obtained by adding together the first torque command value and second torque command value. On the occasion of input of a braking/driving torque of a second drive wheel that is different from the first drive wheel, the estimated value of the rotational angular speed of the first motor is corrected on the basis of the braking/driving torque.

SAWADA AKIRA (JP)
ITOU KEN (JP)
FUJIWARA KENGO (JP)

PCT/JP2017/020521

December 06, 2018

June 01, 2017

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NISSAN MOTOR (JP)

B60L15/20; H02P5/46; H02P21/18

WO2013157315A1	2013-10-24
WO2013157315A1	2013-10-24

JP2017085850A	2017-05-18
JP2011097794A	2011-05-12
JP2003009566A	2003-01-10

See also references of EP 3632733A4

GOTOH & PARTNERS (JP)

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