Vehicle, control method and control device thereof

Abstract

The invention discloses a vehicle, a control method and a control device thereof. The control method comprises the steps that after the vehicle is started, a traction control system (TCS) is started, the TCS conducts starting TCS driving torque control and starting TCS braking control on the vehicle according to a first control target speed and a second control target speed, and after the vehicle reaches an exit target vehicle speed, the TCS is started; and the TCS quits the corresponding starting control mode. According to the method, TCS braking control and driving torque control are decoupled from each other, the problem that TCS driving torque adjustment and braking adjustment of a four-wheel-drive vehicle and a two-wheel-drive vehicle interfere with each other can be solved, the phenomenon that driving torque and braking torque counteract each other is avoided, the purpose of enhancing the driving performance and the energy-saving performance is achieved, and when the method is applied to the four-wheel-drive vehicle, the service life of the vehicle is prolonged. The enough driving torque can be further provided, and the purpose of single-wheel escape is achieved.

Description

technical field [0001] The present application relates to the technical field of automobiles, in particular to a vehicle control method, a vehicle control device and a vehicle. Background technique [0002] In a vehicle, TCS (Traction Control System) is a traction control system, whose function is to enable the vehicle to obtain optimal traction under any working condition. [0003] In the related art, TCS control strategies are different for vehicle models with different driving forms. For two-wheel-drive vehicles, TCS adjusts the driving torque and applies the brakes to adjust the speed wheel by controlling the speed of the driving wheel. However, in the high- and low-attached split roads, this scheme has the situation of driving and braking coupling, which is manifested in the continuous increase of the driving torque and the continuous increase of the braking torque to adjust the wheel speed of the driving wheels. It may lead to the phenomenon that the driving torque a...

AI Technical Summary

Problems solved by technology

However, in this scheme, there is a situation in which the driving torque is first reduced in order to reduce the wheel speed of the high-speed side wheel

In this case, even if the drive shaft speed or wheel speed is adjusted to an appropriate range, there is still a situation where sufficient TCS drive torque request cannot be provided, and the vehicle cannot complete single-wheel escape.

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