US 11,890,948 B2
Control apparatus for electric vehicle
Chihiro Oguro, Tokyo (JP)
Assigned to SUBARU CORPORATION, Tokyo (JP)
Filed by SUBARU CORPORATION, Tokyo (JP)
Filed on Jan. 25, 2021, as Appl. No. 17/157,476.
Claims priority of application No. 2020-034562 (JP), filed on Mar. 2, 2020.
Prior Publication US 2021/0268915 A1, Sep. 2, 2021
Int. Cl. B60L 15/20 (2006.01); B60W 10/08 (2006.01); B60W 10/20 (2006.01)
CPC B60L 15/2036 (2013.01) [B60W 10/08 (2013.01); B60W 10/20 (2013.01); B60L 2240/14 (2013.01); B60L 2240/24 (2013.01); B60L 2240/26 (2013.01); B60L 2240/423 (2013.01); B60W 2510/084 (2013.01); B60W 2520/406 (2013.01); B60W 2530/10 (2013.01); B60W 2710/20 (2013.01); B60W 2720/106 (2013.01); B60W 2720/125 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A control apparatus for an electric vehicle, the electric vehicle including a steering unit, an accelerator operation unit, a left driving motor configured to output power of a left driving wheel, and a right driving motor configured to output power of a right driving wheel, the control apparatus being configured to be installed in the electric vehicle, the control apparatus comprising:
a processor configured to:
calculate requested torque that is based on an operation performed on the accelerator operation unit; and
adjust respective upper limit change rates of left command torque and right command torque that follow the requested torque, the processor being configured to calculate the left command torque and the right command torque; and
a driving controller configured to control the left driving motor and the right driving motor to cause the left driving motor to output the calculated left command torque and the right driving motor to output the calculated right command torque;
wherein the processor is further configured to, on a basis of a predetermined operation of turning back a steering angle performed on the steering unit wherein a steering direction determined from tracking the steering angle over time switches from a first steering direction to a second steering direction and the second steering direction is opposite from the first steering direction and/or different from the first steering direction by more than a predetermined angle, lower a first upper limit change rate of a first driving wheel among the left driving wheel and the right driving wheel serving as an inner wheel before turning back the steering angle, than a second upper limit change rate of a second driving wheel among the left driving wheel and the right driving wheel serving as an outer wheel before turning back the steering angle, and
wherein before turning back the steering angle comprises an instant in time where a first absolute value of the steering angle is equal to or greater than a predetermined steering angle threshold value and a second absolute value of the rate of change of the steering angle over a predetermined time period is equal to or greater than a predetermined steering angle change rate threshold value.