US 11,722,080 B2
Vehicle
Hiroshi Monna, Toyota (JP); Shinichiro Noda, Toyota (JP); Junichi Murase, Aichi-ken (JP); and Takuya Horie, Tokyo (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP); and SUBARU CORPORATION, Tokyo (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP); and SUBARU CORPORATION, Tokyo (JP)
Filed on Dec. 15, 2021, as Appl. No. 17/551,639.
Claims priority of application No. 2020-214090 (JP), filed on Dec. 23, 2020.
Prior Publication US 2022/0200496 A1, Jun. 23, 2022
Int. Cl. H02P 21/14 (2016.01); B60L 15/20 (2006.01); B60K 1/02 (2006.01)
CPC H02P 21/14 (2013.01) [B60L 15/20 (2013.01); B60K 1/02 (2013.01); B60L 2240/423 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A vehicle comprising:
a main motor for traveling; and
an electronic control unit that controls the main motor, the electronic control unit being configured to:
extract, from time series data of a rotation speed of the main motor, vibration data in a predetermined frequency band that includes resonance frequency of a drive system that includes the main motor;
lower an upper limit value of output torque of the main motor from a normal upper limit value to a first upper limit value lower than the normal upper limit value when magnitude of vibration obtained from the vibration data exceeds a first threshold value; and
lower the upper limit value of the output torque of the main motor from the first upper limit value to a second upper limit value lower than the first upper limit value when the magnitude of the vibration exceeds a second threshold value larger than the first threshold value.