Vehicle torque coordination control method and device and automobile

Abstract

The invention provides a vehicle torque coordination control method and device and an automobile. The vehicle torque coordination control method is applied to a vehicle controller of a distributed drive vehicle. The distributed drive vehicle is equipped with an advanced emergency braking system (AEBS). Firstly, driver demand torque is determined, and vehicle longitudinal total demand torque is determined according to state information uploaded by the AEBS and the driver demand torque; secondly, a torque distribution coefficient among motors corresponding wheels is obtained and initial demand torque corresponding to the motors are determined according to the torque distribution coefficient and the vehicle longitudinal total demand torque; and finally, compensation torque which corresponds to the motors and maintains vehicle stability demand is calculated and final demand torque is determined according to the compensation torque and the initial demand torque. The method can ensure that the vehicle can meet requirements of active safety, operation ability and driving performance without the configuration of an ESP system so as to reduce the cost of parts, thereby reducing the cost ofthe vehicle.

Description

technical field [0001] The invention relates to the technical field of vehicle torque control, in particular to a vehicle torque coordinated control method, device and vehicle. Background technique [0002] AEBS (Advanced Emergency Braking System, Advanced Emergency Braking System) is an automatic road vehicle safety system that relies on sensors to monitor the vehicle in front, and calculates the imminent situation by detecting the relative speed and distance between the vehicle and the target vehicle . Depending on the relative speed and distance between the vehicle and the vehicle in front, AEBS can automatically avoid collision or reduce its impact by issuing a danger alarm or even actively performing emergency braking. [0003] Under normal circumstances, when the vehicle brakes in an emergency, it is very easy to cause the lateral slip of the vehicle, causing unexpected unstable movement of the vehicle body and affecting the driving safety of the driver. For example,...

AI Technical Summary

Problems solved by technology

[0004] Therefore, in order to ensure driving stability during emergency braking, vehicles equipped with AEBS systems generally need to be equipped with ESP systems to meet vehicle handling stability requirements, but this also increases vehicle costs.

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