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Patent Searching and Data


Title:
CONTROL METHOD FOR ELECTRIC VEHICLE, AND CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/220805
Kind Code:
A1
Abstract:
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.

Inventors:
SAWADA, Akira (Ltd. Intellectual Property Department 1-1, Morinosatoaoyama, Atsugi-sh, Kanagawa 23, 〒2430123, JP)
ITOU, Ken (Ltd. Intellectual Property Department 1-1, Morinosatoaoyama, Atsugi-sh, Kanagawa 23, 〒2430123, JP)
FUJIWARA, Kengo (Ltd. Intellectual Property Department 1-1, Morinosatoaoyama, Atsugi-sh, Kanagawa 23, 〒2430123, JP)
Application Number:
JP2017/020521
Publication Date:
December 06, 2018
Filing Date:
June 01, 2017
Export Citation:
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Assignee:
NISSAN MOTOR CO., LTD. (2 Takara-cho, Kanagawa-ku Yokohama-sh, Kanagawa 23, 〒2210023, JP)
International Classes:
B60L15/20; H02P5/46; H02P21/18
Domestic Patent References:
WO2013157315A12013-10-24
WO2013157315A12013-10-24
Foreign References:
JP2017085850A2017-05-18
JP2011097794A2011-05-12
JP2003009566A2003-01-10
Attorney, Agent or Firm:
GOTOH & PARTNERS (Shoyu-Kaikan, 3-1 Kasumigaseki 3-chome, Chiyoda-k, Tokyo 13, 〒1000013, JP)
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