Road unevenness early warning and active obstacle avoidance device based on steering-by-wire system

Abstract

The invention discloses a road unevenness early warning and active obstacle avoidance device based on a steering-by-wire system. The device comprises a monitoring module used for monitoring the road conditions, an electronic control unit module, an alarm module and a module steering execution assembly of the steering-by-wire system. A vehicle-mounted camera feeds unevenness information of a road surface ahead back to the electronic control unit module; the electronic unit module judges whether a driver needs to be reminded of the unevenness information of the road surface ahead or not; if not needed, the unevenness of the road surface ahead continues to be monitored; if needed, an alarm instruction is transmitted to the alarm module through the FlexRay network, and at the same time, the module steering execution assembly of the steering-by-wire system is controlled through the FlexRay network to actively turn and bypass the uneven road surface; if the module steering execution assembly of the steering-by-wire system successfully bypasses the uneven road surface, active steering is ended; and if the module steering execution assembly of the steering-by-wire system fails to bypass the uneven road surface, the electronic control unit module controls torque for reflecting the road feeling on a steering wheel and uncomfortable feeling of the driver is not caused. The device ensures stability, safety and driving comfort in the driving process.

Description

Technical field: [0001] The invention relates to a road roughness early warning and active obstacle avoidance device based on a steer-by-wire system, which is used to remind the driver of the roughness of the road ahead and reduce the driver's fatigue during driving. Background technique: [0002] Cars with a steer-by-wire system cancel the mechanical connection between the steering wheel and the steering wheels, and the road feeling is controlled by the electronic control unit according to the preset road feeling simulation control strategy to generate corresponding torque reflected on the steering wheel. It is very important to reflect the information of the part of road surface roughness in the process. [0003] At present, most of the patents published at home and abroad only consider how to better reflect the road feeling of the road surface that the wheels are rolling over, but do not consider actively avoiding obstacles and prompting the driver to reduce the bumps in ...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the patents published at home and abroad only consider how to better reflect the road feeling of the road surface that the wheels are rolling over, but do not consider actively avoiding obstacles and prompting the driver to reduce the bumps in the driving process by pre-monitoring the unevenness of the road surface, and When the traditional mechanical steering system performs active obstacle avoidance, it will simultaneously cause the steering wheel to rotate and affect the driver

Images