Universe vehicle speed gradient self-adaptive abrupt slope slow descent control method and vehicle

• Main Authors: LI DONGYANG, LIU CHUANHUA, REN XUEZHI, WANG KAI
• Format: Patent
• Language: Chinese; English
• Published: 17.01.2025
• 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 relates to an abrupt slope slow descent control method self-adaptive to a global vehicle speed gradient and a vehicle, and belongs to the field of vehicle control. For a vehicle matched with an electric drive system with a fixed transmission ratio, feedforward torque is obtained according to the current vehicle speed of the vehicle and the pre-obtained corresponding relation between the vehicle speed and the motor torque and according to the motor torque, the feedforward torque is superposed to a torque output value of vehicle speed closed-loop control, and the vehicle is controlled to reach the HDC target vehicle speed; the corresponding relation is in positive correlation within the peak torque range of the motor, and the vehicle speed in the corresponding relation is divided into an acceleration interval, an HDC constant torque interval and a deceleration interval along with the increase of the vehicle speed; the HDC constant torque interval corresponds to an HDC target vehicle speed interval