Steering Assist Lane Change Collision Avoidance
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Solution Overview
Problem
Existing steering assist systems fail to effectively address situations where a vehicle abnormally approaches during lane change assist control, leading to safety and convenience issues.
Innovation Solution
A steering assist system that includes a lane change assist control unit, collision avoidance assist control unit, and progress status detection unit, which allows for safe lane changes by monitoring the vehicle's position relative to the lane, detecting abnormal approaches, and controlling steering to prevent collisions and return to a safe position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the lane change assist control is permitted and started based on periphery monitoring, then the lane change operation is assisted, but another vehicle may abnormally approach the own vehicle after the control is started
Solution Approach 1:
The system continuously monitors the relative velocity between the own vehicle and surrounding vehicles during lane change assist control. When another vehicle abnormally approaches (relative velocity exceeds threshold), the system detects this change and provides feedback to stop the lane change assist control, ensuring safety while maintaining operational assistance.
Solution Approach 2:
The system dynamically adjusts the lane change assist control status based on real-time relative velocity measurements. The control transitions from active assistance to stopped state when abnormal approach is detected, allowing the system to adapt to changing safety conditions during the lane change operation.
2Reliability
If the lane change assist control is stopped when another vehicle abnormally approaches, then safety is improved, but convenience is reduced
Solution Approach 1:
The system takes preliminary action by stopping the lane change assist control before a collision can occur when another vehicle abnormally approaches. This preventive measure prioritizes safety over completing the lane change operation, eliminating potential harm before it happens.
3Reliability
If the own vehicle moves to the center position of the previous lane during collision avoidance, then safety is improved, but time is lost
Solution Approach 1:
The system calculates the target controlled variable for returning to the center position in advance and executes the steering control immediately when collision avoidance is needed. This preliminary preparation and immediate execution minimizes the time required to move the vehicle to the safe center position while maintaining collision avoidance effectiveness.
Data Source
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AI summary
A steering assist system includes: a periphery monitoring unit (11); a lane recognition unit (12); a lane change assist control unit (10) configured to start a lane change assist control when the periphery monitoring unit (11) does not detect another vehicle obstructing a lane change; a progress status detection unit (10) configured to detect a progress status of the lane change; a lane change assist stop unit (10) configured to stop the lane change assist control, when the periphery monitoring unit (11) detects an approaching vehicle; a center return assist control unit (10) configured to execute a center return assist control when the lane change assist control is stopped in a former part of the lane change; and a collision avoidance assist control unit (10) configured to execute a collision avoidance assist control when the lane change assist control is stopped in a latter part of the lane change.