US 11,850,948 B1
Drag detection by electrical parameters
Quentin Arthur Cradock Watson Spottiswoode, York Close (GB); and David Martin Armstrong, Wythall (GB)
Assigned to RIVIAN IP HOLDINGS, LLC, Irvine, CA (US)
Filed by Rivian IP Holdings, LLC, Irvine, CA (US)
Filed on Jun. 28, 2023, as Appl. No. 18/343,535.
Int. Cl. B60L 15/20 (2006.01); B60L 5/20 (2006.01)
CPC B60L 5/20 (2013.01) [B60L 2240/12 (2013.01); B60L 2240/427 (2013.01); B60L 2240/465 (2013.01); B60L 2260/20 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system, comprising:
a computing system comprising one or more processors, coupled with memory, to:
determine, for a vehicle, rolling drag based on energy input to one or more motors of the vehicle and a speed of the vehicle;
select, based on the rolling drag and a friction level associated with a surface on which the vehicle traverses, a slip target for the vehicle; and
provide the slip target to a traction control system of the vehicle to control the one or more motors.