US 11,993,266 B1
Transmission control system and method for an electric vehicle
Dongwon Jeoung, Suwon-si (KR); Sunghyun Cho, Yongin-si (KR); Sangmo Ha, Seongnam-si (KR); Jongyun Park, Hwaseong-si (KR); and Jungwoo Seo, Hwaseong-si (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed on Aug. 29, 2023, as Appl. No. 18/239,614.
Claims priority of application No. 10-2022-0169907 (KR), filed on Dec. 7, 2022.
Int. Cl. B60W 30/19 (2012.01); B60W 10/02 (2006.01); B60W 10/08 (2006.01); B60W 10/11 (2012.01)
CPC B60W 30/19 (2013.01) [B60W 10/02 (2013.01); B60W 10/08 (2013.01); B60W 10/11 (2013.01); B60W 2540/10 (2013.01); B60W 2710/022 (2013.01); B60W 2710/083 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A transmission control system of an electric vehicle, the transmission control system comprising:
a motor configured to generate a drive torque;
a transmission configured to perform multi-stage shifting using a dog clutch in a restraint relationship with a one-way clutch configured to transmit forward power of the motor;
a speed sensor configured to measure a rotation speed on an output side of the transmission;
a motor control unit configured to control the drive torque from the motor according to a driver's accelerator position signal (APS) value; and
a vehicle control unit configured to control the multi-stage shifting of the transmission according to a torque command based on the APS value, and to perform clutch alignment control of moving up a sleeve in a reverse direction so as to contact a hub through a reverse rotation operation of gear teeth by applying reverse rotation torque of a predetermined drive force through the motor in a pre-engagement state of the dog clutch.