Vehicle motor hill-holding control method and system and vehicle

• Main Authors: XU BENBEN, ZHU JUN
• Format: Patent
• Language: Chinese; English
• Published: 25.03.2022
• Subjects: ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; TRANSPORTING; VEHICLES IN GENERAL

The invention provides a hill-holding control method and system for a vehicle motor and a vehicle, and the method comprises the steps: firstly obtaining the acceleration a1 at a second moment through the rotating speed of the motor, and then calculating the electromagnetic torque Te1 at the second moment through a torque formula; and then the acceleration a2 at the fourth moment is obtained through the rotating speed of the motor, and the electromagnetic torque Te2 at the fourth moment is calculated through a torque formula. And the current whole vehicle load torque T1 is calculated by combining the acceleration a1 and the electromagnetic torque Te1 at the second moment and the acceleration a2 and the electromagnetic torque Te2 at the fourth moment. And finally, the load torque T1 serves as speed ring feedforward in hill-holding control, the speed ring adjusting process is accelerated through the adjusting torque Treg output by a speed ring, and the slope sliding distance of the vehicle is reduced. 本发明提供了一种车辆