Vehicle creep control device and vehicle creep control method

Abstract

The invention relates to a vehicle creep control device and a vehicle creep control method. The vehicle creeping control device comprises a judgment module which is configured to judge whether a vehicle enters a creeping mode according to vehicle conditions; a speed judgment module which is configured to judge whether the current vehicle speed is lower than a first speed or a second speed, outputa first signal when the current vehicle speed is lower than the first speed and output a second signal when the current vehicle speed is lower than the second vehicle speed, and the first speed is higher than the second speed; and a torque control module which comprises a driving torque control unit and a braking torque control unit, when the torque control module receives the first signal, the driving torque control unit outputs expected driving torque, and the braking torque control unit controls the braking system not to generate braking torque; and when the torque control module receives the second signal, the drive torque control unit and the brake torque control unit output expected drive torque and expected brake torque according to the state of the brake pedal.

Description

technical field [0001] The present application relates to longitudinal motion control of a vehicle, in particular, to a vehicle creep control device and a vehicle creep control method. Background technique [0002] In current vehicle creep conditions, the vehicle often creeps at very low speeds. In this case, if the torque of the drive system and the brake system of the vehicle cannot be reasonably acted on or distributed to the wheels, the stability of the longitudinal motion of the vehicle and the driving comfort will be greatly affected. Contents of the invention [0003] The purpose of the present application is to solve or at least alleviate the problems existing in the prior art. [0004] According to some aspects of the present application, the present application proposes a vehicle creep control device for a vehicle with a brake-by-wire system, comprising: [0005] The judging module is configured to judge whether the vehicle enters the creeping mode according to...

AI Technical Summary

Problems solved by technology

In this case, if the torque of the vehicle's drive system and the torque of the braking system cannot be reasonably acted or distributed on the wheels, it will greatly affect the stability of the vehicle's longitudinal motion and driving comfort.

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