Lane keeping assistant system

Abstract

The invention relates to a lane keeping assistant system. The system comprises a sensing module, a control module and an execution module, wherein the sensing module is used for gathering lane information and vehicle information; the control module is connected with the sensing module and a vehicle controller, and is used for computing a lane keeping assistant moment according to received information and overlaying the lane keeping assistant moment to a driver true steering moment, so as to form a virtual driver steering moment; and the execution module is connected with the control module, and is used for responding the virtual driver steering moment. Compared with the prior art, the lane keeping assistant system has the advantages that the lane keeping assistant moment is overlapped to the driver true steering moment, so as to obtain a virtual driver steering moment, and the driver true steering moment measured through a steering moment sensor originally is replaced, so that a lane keeping function is realized, hardware is easy to realize, the lane keeping assistant system is convenient to refit, and the cost is low.

Description

technical field [0001] The invention belongs to the technical field of automobiles and relates to an advanced driver assistance system, in particular to a lane keeping assistance system. Background technique [0002] Nowadays, there are countless traffic accidents caused by driver factors every year, so smart cars and advanced driver assistance systems have become current research and industry hotspots, and lane keeping assistance systems, as one of the horizontal driver assistance systems, can effectively Prevent the vehicle from deviating from the lane when driving at high speed, thus effectively preventing the occurrence of traffic accidents caused by lane departure. [0003] In a typical lane keeping assist system, when the vehicle reaches a preset speed and is about to deviate from the lane, and the driver does not turn on the turn signal, the lane keeping assist system will actively intervene in the heading control of the vehicle. It is more common to apply a braking ...

AI Technical Summary

Problems solved by technology

[0004] However, in typical lane keeping assist devices, when the vehicle is about to deviate from the lane, the controller directly sends a torque command to the assist motor in the electric power steering system.

With the high integration of the system, the steering system supplier usually provides the steering system assembly directly to the OEM, and the power assist strategy and the torque command interface of the motor are usually not open to the OEM, or the torque control interface has not been reserved in advance. Therefore, if the OEM wants to develop a lane keeping assist system based on the original electric power assist system, without the support of the steering system supplier, it cannot directly send the torque command to the power assist motor, so that the lane keeping assist function cannot be realized

If the controller of the electric power steering system is developed by itself, replacing the existing controller of the original car, or adding an additional motor for the lane keeping assist function, although the lane keeping assist function can be realized, the changes to the original system are too large, The integrity and reliability of the original steering system function will be difficult to guarantee, and the cost will be high

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