公开(公告)号：US11705833B2

公开(公告)日：2023-07-18

申请号：US17697978

申请日：2022-03-18

Applicant: CHROMA ATE INC.

Inventor： Yu-Ting Lin ,  Cheng-Tsung Lin

IPC: H02P21/22 ,  H02P6/08 ,  H02P25/026 ,  H02P9/00

CPC classification number: H02P6/08 ,  H02P9/009 ,  H02P25/026

Abstract: The present application discloses a motor controller, a motor control method and a computer program product for vehicle assist control. An assist torque command for a motor device to perform vehicle assist control is generated according to an execution command of a vehicle assist determination unit and a rotor position signal and a rotor speed signal of a motor device. An original position signal of the motor device and the rotor position signal are calculated, and a position ratio calculation is performed to generate a front-order torque command. A torque damping command is generated according to the speed ratio calculation based on the rotor speed signal, and is calculated with the front-order torque command to generate an assist torque command. Thus, position information of the rotor of the motor device can be directly used in the calculation and speed information is at the same time used for an assist calculation, thereby preventing an error and solving the issue of sliding during parking.