Vehicle Lane-Keeping Control Handover for Safe Deviation Prevention
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Solution Overview
Problem
Existing driving control devices do not account for the possibility of abnormalities in lane keeping control functions, leading to potential deviations from the travel lane.
Innovation Solution
The driving control device determines if a second controller initiates deviation preventing control during lane keeping control, concludes lane keeping control if an abnormality is detected, initiates deceleration, continues deviation preventing control until the vehicle stops, and concludes it upon stopping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If lane keeping control is executed by a first controller, then the vehicle can maintain lane position, but an abnormality may occur in the execution function without detection
Solution Approach 1:
The system implements feedback by monitoring whether the second controller starts deviation preventing control during lane keeping control execution. When the second controller activates deviation preventing control, this feedback indicates an abnormality in the first controller's lane keeping function, triggering appropriate responses including concluding lane keeping control and initiating deceleration control to ensure safety
Solution Approach 2:
The system performs preliminary action by having the second controller stand by with deviation preventing control capability. When an abnormality is detected through the feedback mechanism, the second controller can immediately activate deviation preventing control without waiting for further analysis, enabling rapid response to potential lane deviation risks
2Reliability
If deviation preventing control is activated during lane keeping control, then vehicle deviation can be prevented, but control switching complexity increases
Solution Approach 1:
The control system is segmented into distinct functional modules: lane keeping control by the first controller, deviation preventing control by the second controller, and abnormality determination logic. This segmentation allows each controller to operate independently with clearly defined responsibilities, simplifying the coordination mechanism despite the dual-controller architecture
Solution Approach 2:
The system dynamically switches between lane keeping control and deviation preventing control based on real-time abnormality detection. The first controller executes lane keeping control under normal conditions, while the second controller activates deviation preventing control when abnormalities are detected, creating a dynamic control architecture that adapts to system state
Data Source
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AI summary
Driving control device (100) executes driving assistance control for a subject vehicle (1) using a processor (10) having a first controller (11) and a second controller (12). The first controller (11) executes lane keeping control while the second controller (12) executes deviation preventing control. The processor (10) determines whether or not the second controller (12) starts the deviation preventing control during execution of the lane keeping control with the first controller (11). Upon a determination that the second controller (12) starts the deviation preventing control during execution of the lane keeping control, the processor (10) concludes the lane keeping control under execution, starts deceleration control for the subject vehicle (1), continues the deviation preventing control until the subject vehicle (1) stops, and concludes the deviation preventing control under execution when the subject vehicle (1) stops by the deceleration control.