Drive anti-skid control method applied to automobile electric drive axle

Abstract

The invention provides a drive anti-skid control method applied to an automobile electric drive axle, aiming to overcome the defects of poor pavement adaptability, single control algorithm, dependenceon excessive vehicle parameters, poor control robustness and the like in the prior art, and belongs to an automobile control system. The drive anti-skid control method comprises the following steps:judging whether a vehicle is on a folio road surface or a uniform road surface with a low adhesion coefficient according to a difference value between a wheel real-time slip ratio and wheel real-timeslip ratios on two sides; adopting braking force logic threshold control to perform braking intervention on the sliding wheels located on the split road surface; and further judging the type of the road surface where the uniform low-adhesion-coefficient road surface gliding wheel is located in an initial braking mode, and controlling and adjusting the gliding wheel driving torque through a slidingmode variable structure. The drive anti-skid control method has the advantages that the type of the road surface can be judged in real time on the basis of standard road surface data, and different control algorithms are adopted to control the wheel slip rate to be close to the optimal value, and the road surface adaptability of a driving antiskid control system is improved, and the dynamic property, lateral stability and starting acceleration capacity of a vehicle are improved.

Description

technical field [0001] The invention belongs to an automobile control system, in particular to a driving anti-slip control method applied to an electric drive axle of an automobile. Background technique [0002] With the increasing number of new energy vehicles and the development of intelligent vehicle technology, higher requirements are put forward for the control system used in new energy vehicles. As an important structural form in new energy vehicles, the electric drive axle uses the drive motor as the power source to drive the wheels, eliminating the need for complex mechanical structures such as clutches in traditional vehicles, and improving transmission efficiency and dynamic response capabilities. As one of the core technologies in the field of vehicle drive safety technology, the drive anti-skid control system mainly ensures that the vehicle obtains greater traction and lateral force by controlling the slippage of the wheels, especially on roads with low adhesion ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the problems of poor road adaptability, single control algorithm, too much dependence on vehicle parameters, and poor control robustness existing in the existing electric drive axle drive anti-skid control system, and to provide a vehicle electric drive anti-skid control system. The driving anti-slip control method with simple control algorithm and good road condition adaptability

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