Vehicle Lateral Position Control for Learned Driver Steering Preference
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Solution Overview
Problem
Conventional vehicle control systems require frequent and cumbersome steering operations by drivers when transitioning through provisional shared sections, as they do not adapt to the driver's preferred lateral positioning.
Innovation Solution
A vehicle control system that learns and adjusts the target lateral position based on the driver's steering deviations during predefined scenes, storing learning values to adapt the target position to the driver's preferences, reducing the need for repetitive steering adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the conventional device sets the center line of the lane as the target traveling line, then the lane keeping control can be executed with a simple control rule, but the driver must apply large steering operation force every time in provisional shared sections
Solution Approach 1:
The system performs preliminary action by detecting when the vehicle enters a provisional shared section in advance and proactively shifts the target traveling line from the center line to a position shifted toward the road shoulder. This anticipatory adjustment prevents the driver from needing to apply large steering forces, as the control system has already positioned the target line appropriately before the driver would need to correct the vehicle position.
2Adaptability or versatility
If the conventional device changes the target traveling line position based on steering operation force threshold, then the control can adapt to driver input, but the driver still needs to apply large steering force to initiate the change
Solution Approach 1:
The system uses feedback by continuously monitoring vehicle position, lane markings, and road type information. When the vehicle is detected to be in a provisional shared section, the system automatically adjusts the target traveling line position based on this feedback, eliminating the need for the driver to apply large steering forces to trigger a response. The control system responds to the detected situation rather than requiring strong driver input.
Solution Approach 2:
The system performs self-service by autonomously detecting the provisional shared section and automatically adjusting the target traveling line position without requiring driver intervention or large steering forces. The control system serves itself by using its own sensors and processors to identify the situation and implement the appropriate control adjustment independently.
3Device complexity
If the target lateral position is fixed at the center line, then the control system is simple to implement, but it does not accommodate driver preference for positioning near the road shoulder
Solution Approach 1:
The system applies dynamics by making the target lateral position variable rather than fixed. The target traveling line dynamically shifts from the center line position to a position toward the road shoulder when the vehicle enters a provisional shared section, and returns to the center line when exiting such sections. This dynamic adjustment accommodates driver preference without requiring complex permanent modifications to the control system architecture.
Data Source
AI summary
When the driver performs a steering operation when the scene in which the host vehicle is traveling is a predetermined learning scene, the vehicle control device stores a value corresponding to the steering operation in association with the learning scene. Thereafter, when the scene specified by the peripheral information changes to the learning scene during the execution of the driving support control, and/or when the scene specified by the peripheral information at the time when the execution of the driving support control is started is the learning scene, the vehicle control device changes the target lateral position based on the stored learning value.