METHOD FOR CONTROLLING OPERATING SPEED AND TORQUE OF ELECTRIC MOTOR

摘要

Systems and methods for controlling the operating speed and the torque of an electric motor using an operational model are described. An operational model for the electric motor, including a plot of engine performance parameters, is used for reference, and a most efficient output path, which may pass through an optimal operation region in the operational model, is selected. The most efficient output path may be determined, for example, according to locations of a current output state and a to-be-reached target state in the operational model, enabling the operating state of the motor to reach the target state from the current operating state. By selecting a more efficient output path, the operating efficiency of the motor may be optimized, the life of a battery improved and/or the operating mileage of the vehicle may be increased, without significantly reducing the driving experience.

主权项

1. An electric vehicle motor controller, comprising:
a processor; and a storage device including an operational model stored thereon, the operational model including a plurality of operation positions and an optimal operation region of an electric motor, each operation position corresponding to a speed parameter, a torque parameter and an operating efficiency parameter of the electric motor; wherein the processor is configured to:
detect a current speed parameter and a current torque parameter of the electric motor;determine a current operation position of the electric motor in the operational model based on the current speed parameter and the current torque parameter;determine a target speed parameter and a target torque parameter corresponding to a target operation position of the electric motor in the operational model;calculate power requirements for two transition paths connecting the current operation position and the target operation position in the operational model, the two transition paths including a first path consisting of one vector, and a second path consisting of two vectors; andselect one of the two transition paths for controlling the electric motor based at least in part on the calculated power requirements.