Automobile linear driving capability robustness control system and control method thereof

Abstract

The invention discloses an automobile linear driving capability robustness control system. The robustness control system comprises a parameter acquisition module, a parameter processing module, a controller and an active return module. The invention further discloses a control method of the automobile straight driving capability robustness control system, the steering wheel correction angle and the steering wheel correction angle deviation are determined by obtaining the relative steering angle of the steering column and the running parameters of the automobile, the relative steering angle of the steering wheel is obtained, and whether the automobile is in a straight driving state is judged; when the vehicle is in a straight running state, the active aligning module is closed, the friction torque of the steering system is adjusted through the friction compensation module, the influence of external factors on the vehicle when the vehicle runs straight is further resisted, and therefore the robustness of the straight running capacity of the vehicle is improved.

Description

technical field [0001] The invention relates to the technical field of automobile steering control, in particular to a robust control system and a control method for straight-line driving ability of an automobile. Background technique [0002] The straight-line driving ability of the vehicle is affected by multiple factors. Firstly, the manufacturing deviation of the vehicle itself, the four-wheel alignment deviation, the taper force of the left and right tires, the force distribution of the left and right spring axes, the load distribution and other mechanical structural factors of the vehicle, and secondly, the EPS active return function of the steering system is involved. , coupled with the uneven road surface and crosswinds outside will affect the ability of the vehicle to maintain a straight line. The increase in the manufacturing deviation of the mechanical part will improve the ability of the vehicle to maintain a straight line, but it will also directly cause an incr...

AI Technical Summary

Problems solved by technology

This solution uses the traditional physical steering sensor, and increases the torque of EPS to increase the anti-interference ability. Although the interference of roads and mechanical parts is reduced, and the robustness of the vehicle is increased, it does not avoid the interference caused by the return function of EPS.

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