Patent ID: 11884162
Assignee: HYUNDAI MOTOR COMPANY
Field: Transport (Mechanical engineering)
Classification: CPC B  Y | IPC B  G

Claim 11:
12. A motor control system for a commercial vehicle having an electric axle, the motor control system comprising:
a first motor and a second motor disposed in a rear-wheel electric axle;
an accelerator position sensor configured to detect a degree to which an accelerator is depressed;
a wheel speed sensor configured to detect a wheel speed change; and
a controller configured to:
determine a driver's required torque based on detection signals of the accelerator position sensor and the wheel speed sensor, respectively, and
control a first motor torque of the first motor to approach a target torque for satisfying the driver's required torque while either controlling a second motor torque of the second motor to a level that compensates for a torque error of the first motor when an actual output torque of the first motor includes the torque error that is a distance away from the target torque for satisfying the driver's required torque, or controlling a maxim-torque period for the first motor and a maximum-torque period for the second motor at alternating fixed duty ratios.