US 12,403,886 B2
Electric drive vehicle with anti-rollback control
Martin T. Books, Columbus, IN (US); Odaro Omusi, Columbus, IN (US); Jack Schneider, Columbus, IN (US); Richard A. Booth, Columbus, IN (US); Jaime A. Lugo-Castillo, Columbus, IN (US); and Quresh Sutarwala, Fremont, CA (US)
Assigned to CUMMINS INC., Columbus, IN (US)
Appl. No. 17/779,495
Filed by Cummins Inc., Columbus, IN (US)
PCT Filed Sep. 21, 2020, PCT No. PCT/US2020/051731
§ 371(c)(1), (2) Date May 24, 2022,
PCT Pub. No. WO2021/108012, PCT Pub. Date Jun. 3, 2021.
Claims priority of provisional application 62/942,031, filed on Nov. 29, 2019.
Prior Publication US 2024/0166188 A1, May 23, 2024
Int. Cl. B60W 10/08 (2006.01); B60W 10/02 (2006.01); B60W 10/18 (2012.01); B60W 30/18 (2012.01); B60W 30/188 (2012.01); B60W 50/00 (2006.01)
CPC B60W 10/024 (2020.02) [B60W 10/08 (2013.01); B60W 10/18 (2013.01); B60W 30/1886 (2013.01); B60W 2050/0024 (2013.01); B60W 2510/083 (2013.01); B60W 2720/24 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of reducing rollback of an electric vehicle, the method
comprising:
determining a position baseline of the electric vehicle, the position baseline comprises a first position of the electric vehicle;
determining a position compensated speed of the electric vehicle based on the position baseline;
determining a hold torque as a function of the position compensated speed;
generating a command to apply the hold torque with a motor-generator of the electric vehicle; and
permitting the electric vehicle to roll to a second position, stopping the roll at the second position with the hold torque, and continuing to apply the hold torque to counter the roll until the vehicle stops at a third position;
wherein the third position equals the first position.