Shift control method for amt vehicle

A shift control method for an automated manual transmission (AMT) comprising a first motor, a second motor, and a planetary gear unit, where the first motor supplies power to a first rotating element of the planetary gear unit, the second motor supplies power to the first rotating element or a second rotating element of the planetary gear unit, the second rotating element being coupled to an output shaft, and power output from the first motor and power output from the second motor are combined together via the planetary gear unit, the shift control method comprising:

• in response to a shift operation, increasing a torque of the second motor so that an output torque of the output shaft follows a predetermined early-increasing target torque while decreasing a torque of the first motor;
• maintaining the increased torque of the second motor to be constant while performing a control over transmission release, speed synchronization, and transmission coupling;
• and
• after the control over the transmission release is completed, controlling the torque of the second motor so that the output torque of the output shaft follows a predetermined target torque while controlling the torque of the first motor to be increased.

A shift control method for an automated manual transmission (AMT) comprising a first motor, a second motor, and a planetary gear unit, where the first motor supplies power to a first rotating element of the planetary gear unit, the second motor supplies power to the first rotating element or a second rotating element of the planetary gear unit, the second rotating element being coupled to an output shaft, and power output from the first motor and power output from the second motor are combined together via the planetary gear unit, the shift control method comprising:

• in response to a shift operation, increasing a torque of the first motor so that a change in an output torque of the output shaft due to a change in a torque of the second motor is minimized while decreasing the torque of the second motor;
• maintaining the increased torque of the first motor to be constant while performing a control over transmission release, speed synchronization, and transmission coupling;
• and
• after the control over the transmission release is completed, controlling the torque of the first motor so that the output torque of the output shaft follows a predetermined target torque while controlling the torque of the second motor to be increased.