Lane keeping auxiliary system based on EPS

Abstract

The invention discloses an EPS-based lane keeping auxiliary system which controls vehicle deviation through lane line detection, driver driving intention judgment, EPS power-assisted steering and active steering, and plays a great role in guaranteeing life and property safety of drivers and other people. According to the system, the time from lane departure early warning to control of a driver can be adjusted by setting a preview distance, meanwhile, a corresponding transverse distance threshold value is set to be used for judging whether a vehicle deviates when reaching a preview point position, and good timeliness is achieved; the system comprehensively judges whether the driver is in an operation state or not through three conditions, so that the false early warning probability can be reduced; in addition, two control modes including an active steering mode and an EPS power assisting mode are set, corresponding parameters are adjusted through a PID controller, and good robustness is achieved.

Description

technical field [0001] The invention belongs to the field of vehicle control, and in particular relates to an EPS-based lane keeping assist system. Background technique [0002] With the advancement of technology and the development of the economy, cars have begun to be popularized on a large scale, and the number of car ownership and drivers has increased year by year, which has also led to increasingly prominent problems in vehicle driving safety. When the driver is driving on the road, due to fatigue driving or other improper driving behaviors, the car will easily deviate from the lane without the driver's awareness, which will easily cause traffic accidents and have a negative impact on the safety of the driver and other people's life and property. Big threat. [0003] Lane Keeping System (LKS) is one of the basic technologies of ADAS (Advanced Driver Assistant System), which can reduce the driver's excessive dependence on driving skills and physical conditions, reduce ...

AI Technical Summary

Problems solved by technology

[0011] 1) The method of judging whether the lane will deviate is relatively complicated and time-sensitive, which is not conducive to the system or the driver to make an effective response in a short time;

[0012] 2) When the vehicle deviates and the driver can independently operate the steering, the lane keeping assist system has a single basis for judging the driver's driving state, which is prone to the phenomenon of "car seizing people", resulting in unnecessary frequent warnings. The driver's operating comfort is significantly affected

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