US 11,679,683 B2
Method for implementing virtual internal combustion engine vibration in electric vehicle
Ji Won Oh, Hwaseong-si (KR); Dong Chul Park, Anyang-si (KR); Jeong Soo Eo, Hwaseong-si (KR); and Tae Kun Yun, Anyang-si (KR)
Assigned to Hyundai Motor Company, Seoul (KR); and Kia Motors Corporation, Seoul (KR)
Filed by Hyundai Motor Company, Seoul (KR); and Kia Motors Corporation, Seoul (KR)
Filed on Feb. 19, 2021, as Appl. No. 17/180,039.
Claims priority of application No. 10-2020-0121973 (KR), filed on Sep. 22, 2020.
Prior Publication US 2022/0089035 A1, Mar. 24, 2022
Int. Cl. B60L 15/00 (2006.01); B60L 15/20 (2006.01)
CPC B60L 15/20 (2013.01) [B60L 2240/421 (2013.01); B60L 2240/423 (2013.01); B60L 2240/461 (2013.01); B60L 2250/26 (2013.01); B60L 2270/42 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for implementing virtual internal combustion engine vibration in an electric vehicle, the method comprising:
collecting operation variable information for determining a torque instruction and implementing the virtual internal combustion engine vibration while the electric vehicle travels;
determining a virtual internal combustion engine vibration characteristic based on the collected operation variable information;
determining a vibration torque instruction having the determined virtual internal combustion engine vibration characteristic;
correcting the vibration torque instruction by correcting the determined virtual internal combustion engine vibration characteristic of the vibration torque instruction and/or a value of the vibration torque instruction, based on a basic motor torque instruction determined by the collected operation variable information and a preset backlash occurring area information;
determining a final motor torque instruction using the basic motor torque instruction and the corrected vibration torque instruction; and
controlling an operation of a driving motor of the electric vehicle according to the determined final motor torque instruction.