公开(公告)号：US20180264971A1

公开(公告)日：2018-09-20

申请号：US15459570

申请日：2017-03-15

Applicant: GM Global Technology Operations LLC

Inventor： Love LOR ,  Adam J. Heisel ,  Nathaniel S. Michaluk ,  Robert L. Morris

IPC: B60L15/20

CPC classification number: B60L15/20 ,  B60L2240/12 ,  B60L2240/423 ,  B60L2240/52 ,  B60L2250/26 ,  Y02T10/6286 ,  Y02T10/7241 ,  Y02T10/7275

Abstract: A road load module is configured to determine a road load torque to maintain zero vehicle acceleration. An initialization module is configured to determine an initial torque based on the road load torque. A closed loop (CL) module is configured to: when a CL state transitions from an inactive state to an active state, set a CL torque to the initial torque; and when the CL state is in the active state after transitioning to the active state, adjust the CL torque based on a difference between a target vehicle speed and a vehicle speed. A motor torque module is configured to determine a motor torque command based on the CL torque and a motor torque request determined based on an accelerator pedal position. A switching control module is configured to, based on the motor torque command, control switching of an inverter and apply power to an electric motor.

公开(公告)号：US20180264970A1

公开(公告)日：2018-09-20

申请号：US15459486

申请日：2017-03-15

Applicant: GM Global Technology Operations LLC

Inventor： Love LOR ,  Adam J. HEISEL

IPC: B60L15/20 ,  H02P27/06

CPC classification number: B60L15/20 ,  B60L2240/12 ,  B60L2240/423 ,  H02P27/06 ,  Y02T10/6286 ,  Y02T10/644 ,  Y02T10/7241 ,  Y02T10/7275

Abstract: A road load module is configured to determine a road load torque to maintain zero vehicle acceleration. A closed loop (CL) module is configured to determine a CL torque based on a difference between a target vehicle speed and a vehicle speed. A motor torque module is configured to: produce a limited CL torque by limiting the CL torque to a predetermined torque limit when a magnitude of the CL torque is greater than a magnitude of the predetermined torque limit; when the vehicle speed is within a predetermined low speed range and a magnitude of the road load torque is greater than or less than a magnitude of a predetermined maximum torque, adjust the predetermined torque limit; and determine a motor torque command based on the limited CL torque and a motor torque request determined based on a position of an accelerator pedal.