Automated Lane Change Control Using Dynamic Area Adjustment
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Solution Overview
Problem
Automated lane change systems in vehicles often unintentionally cancel lane changes when another vehicle enters a predetermined area, preventing the vehicle from shifting to a diverging or merging lane, contrary to the driver's intention.
Innovation Solution
A driving control apparatus that adjusts the predetermined area for lane change continuation determination based on the vehicle's position within specific sections like diverging or merging areas, using a smaller area when in these sections to prevent unintended lane change cancellation, allowing the vehicle to continue lane changes even if another vehicle enters the area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large predetermined area is used for lane change continuation determination, then safety is improved by detecting other vehicles, but lane change cancellation occurs unintentionally in diverging sections
Solution Approach 1:
The patent dynamically adjusts the predetermined area size based on the vehicle's position. When the vehicle is in a diverging section, the system switches to a smaller second predetermined area; when in a general section, it uses a larger first predetermined area. This dynamic adaptation allows the system to maintain safety in general sections while preventing unintended cancellations in diverging sections.
Solution Approach 2:
The patent applies different detection criteria to different spatial locations. By identifying whether the vehicle is in a diverging section or general section, the system applies a smaller predetermined area for diverging sections and a larger predetermined area for general sections. This local differentiation resolves the contradiction between safety and ease of operation in different contexts.
2Productivity
If the predetermined area for lane change continuation is reduced, then lane change success in diverging sections is improved, but safety detection capability deteriorates in general sections
Solution Approach 1:
The system dynamically changes the predetermined area size based on the vehicle's location. In diverging sections, it uses a smaller second predetermined area to improve lane change success rates. In general sections, it uses a larger first predetermined area to maintain safety detection capability. This dynamic adjustment resolves the contradiction between productivity and reliability.
Solution Approach 2:
The patent changes the parameter of predetermined area size based on the vehicle's position in different road sections. By switching between a larger first predetermined area and a smaller second predetermined area, the system optimizes both safety detection and lane change success rate for different operating conditions.
Data Source
AI summary
An automated driving controller for a vehicle includes an environmental condition estimating part including a surrounding recognition function for recognizing a vehicle's driving lane, neighboring lanes, and other vehicles driving in the driving lanes and a function for obtaining the vehicle's moving state, a path generating part for generating a target path on the basis of information obtained by the environmental condition estimating part, and a vehicle control part configured to perform speed control and steering control for causing the vehicle to follow the target path, and has a function for performing automated lane change to a neighboring lane when there is no other vehicle in a predetermined range of the neighboring lane and a function for determining whether lane change should be continued when another vehicle is recognized in a predetermined area (XF and XR) around the vehicle during execution of the automated lane change.