METHOD AND CORRESPONDING DEVICE FOR COUPLING A SHAFT OF AN ELECTRIC MOTOR WITH A WHEEL SHAFT OF AN ELECTRICALLY POWERED OR HYBRID MOTOR VEHICLE

摘要

A method and device for coupling an electric motor shaft with a wheel shaft of a vehicle includes measurement of rotation speed of the electric motor and measurement of rotation speed of the wheels. The method also includes formulating via a closed-loop control a first operating setpoint for the electric motor based on the measured rotation speed of the electric motor and the measured rotation speed of the wheels; formulating a second operating setpoint based on the measured rotation speed of the wheels to which at least one coefficient is applied; controlling the operation of the motor around a final operating setpoint formulated based on adding together the first and second operating setpoints; and coupling, if the measured speed of the wheels to which the at least one coefficient is applied is equal to the measured speed of the motor, the electric motor shaft with the wheel shaft.

主权项

1. A method for coupling an electric motor shaft with a wheel shaft of an electrically powered or hybrid motor vehicle, said method comprising a measurement of the speed of rotation of the electric motor (ωemes) and a measurement of the speed of rotation of the wheels (ωwhmes), said method comprising:
formulating via a closed-loop control a first operating setpoint (Teint) for the electric motor on the basis of the measured speed of rotation of the electric motor and the measured speed of rotation of the wheels, said control involving an integration, formulating a second operating setpoint (Teanti) on the basis of the measured speed of rotation of the wheels to which at least one coefficient is applied, controlling the operation of the motor around a final operating setpoint (Teref) formulated on the basis of adding together the first and second operating setpoints, and coupling, if the measured speed of the wheels to which said at least one coefficient is applied is equal to the measured speed of the motor, of the shaft of the electric motor with the wheel shaft.