Method for controlling an electric-vehicle wound-rotor motor, comprising: - a step of receiving a torque setpoint (Tq_sp) - a step of receiving a signal indicating rotor position (θ) - a step of computing a rotor velocity (V MOT) from said signal indicating rotor position (θ) - a step of determining stator-current setpoints (Id_sp and Iq_sp) and an excitation-current setpoint (If_sp) using said computed rotor velocity (V MOT) and said torque setpoint (Tq_sp) - a step of automatically controlling the phase currents of said motor to the stator-current setpoints (Id_sp and Iq_sp) depending on said signal indicating rotor position (θ) - a step of determining a rotor-rotation velocity V MOT ̃ from said determined wheel velocity (Vrd) comprising, when reducing gearing is present, multiplying said determined wheel velocity (Vrd) by a reduction ratio of the reducing gearing of the vehicle, characterized in that it comprises - a step of automatic closed-loop control of an excitation current to the excitation-current setpoint (If_sp) - a step of detecting failure of the signal indicating rotor position, followed by a step of replacing said signal indicating rotor position (θ) with a signal obtained in a step of determining a wheel velocity of the vehicle - a step of estimating a rotor position ( θ̃) from said rotor velocity V MOT ̃ determined beforehand, said step of estimating a rotor position ( θ̃) being a step of integrating with respect to time that is conditional - to said failure of the signal indicating rotor position, or, - to the absolute value of the difference between said determined rotor-rotation velocity V MOT ̃ and said computed rotor-rotation velocity (VMOT) exceeding an error threshold that is continuously preset beyond a preset time. - a step of correcting the rotor-excitation-current setpoint (If_sp) using said excitation-current setpoint (If_sp) dependent on said determined rotor-rotation velocity V MOT ̃, said torque setpoint (Tq_sp) and a measurement or estimation (Tq_est) of said motor torque. - a step of receiving a torque setpoint (Tq_sp) - a step of receiving a signal indicating rotor position (θ) - a step of computing a rotor velocity (V MOT) from said signal indicating rotor position (θ) - a step of determining stator-current setpoints (Id_sp and Iq_sp) and an excitation-current setpoint (If_sp) using said computed rotor velocity (V MOT) and said torque setpoint (Tq_sp) - a step of automatically controlling the phase currents of said motor to the stator-current setpoints (Id_sp and Iq_sp) depending on said signal indicating rotor position (θ) - a step of determining a rotor-rotation velocity V MOT ̃ from said determined wheel velocity (Vrd) comprising, when reducing gearing is present, multiplying said determined wheel velocity (Vrd) by a reduction ratio of the reducing gearing of the vehicle, characterized in that it comprises - a step of automatic closed-loop control of an excitation current to the excitation-current setpoint (If_sp) - a step of detecting failure of the signal indicating rotor position, followed by a step of replacing said signal indicating rotor position (θ) with a signal obtained in a step of determining a wheel velocity of the vehicle - a step of estimating a rotor position ( θ̃) from said rotor velocity V MOT ̃ determined beforehand, said step of estimating a rotor position ( θ̃) being a step of integrating with respect to time that is conditional - to said failure of the signal indicating rotor position, or, - to the absolute value of the difference between said determined rotor-rotation velocity V MOT ̃ and said computed rotor-rotation velocity (VMOT) exceeding an error threshold that is continuously preset beyond a preset time. - to said failure of the signal indicating rotor position, or, - to the absolute value of the difference between said determined rotor-rotation velocity V MOT ̃ and said computed rotor-rotation velocity (VMOT) exceeding an error threshold that is continuously preset beyond a preset time. - a step of correcting the rotor-excitation-current setpoint (If_sp) using said excitation-current setpoint (If_sp) dependent on said determined rotor-rotation velocity V MOT ̃, said torque setpoint (Tq_sp) and a measurement or estimation (Tq_est) of said motor torque.