Vehicle Steering Reaction Force for Boundary-Based Deviation Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle driving assist systems fail to prevent lane deviations caused by unintentional driver steering operations, leading to potential safety hazards when vehicles approach objects nearby.
Innovation Solution
A control device and method that calculates a deviation boundary line around recognized objects and generates a reaction force on the steering device to prevent the vehicle from crossing this boundary, ensuring the driver's unintentional operations do not result in collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If driving assist controls steering to prevent lane deviation, then lane keeping capability is improved, but the system may not execute when driver unintentionally operates steering device, leading to safety risks
Solution Approach 1:
The system applies a reaction force to the steering device in advance when the vehicle approaches a deviation boundary line, creating preliminary opposition to potential unintentional steering operations. This prevents the vehicle from crossing into dangerous zones before the driver's unintentional operation can complete the hazardous maneuver.
Solution Approach 2:
The reaction force generated by the control device acts as an intermediary between the driver's steering input and the vehicle's actual steering response. When the vehicle approaches the deviation boundary, this intermediary force opposes unintentional steering operations while allowing intentional lane changes when the driver applies sufficient force.
2Manufacturing precision
If steering assist is provided to help lane keeping, then driving precision is improved, but driver's unintentional operation may override the assist, causing vehicle to approach objects
Solution Approach 1:
The system performs preliminary detection of the vehicle's approach to the deviation boundary line and prepares the reaction force mechanism in advance. When unintentional steering operation is detected, the reaction force is already positioned to counteract the unwanted movement, ensuring safety before the vehicle can reach a hazardous position.
Solution Approach 2:
The reaction force mechanism dynamically adjusts based on the vehicle's proximity to the deviation boundary line and the detected steering operation characteristics. The system transitions between normal steering assist mode and reactive opposition mode, allowing intentional lane changes while preventing unintentional deviations.
3Ease of operation
If the system allows driver override by operating steering device to given degree, then ease of operation is improved, but unintentional operation may cause vehicle to deviate from lane
Solution Approach 1:
The system continuously monitors steering device operation and provides feedback through the reaction force mechanism. When the vehicle approaches the deviation boundary and unintentional operation is detected, the system responds with opposing reaction force, creating a feedback loop that prevents hazardous deviations while maintaining normal override capability for intentional maneuvers.
Solution Approach 2:
The system changes the operational parameters of the steering assist based on the vehicle's proximity to the deviation boundary line. Normal steering assist parameters are applied during normal operation, while reactive parameters with opposing reaction force are applied when approaching the boundary, distinguishing between intentional and unintentional operations.
Data Source
AI summary
A control device executes: a process of calculating a boundary line based on information on an environment around the vehicle such that the boundary line is set at a predetermined position distanced from a recognized object around the vehicle; a process of determining whether the vehicle is traveling in a direction to approach the boundary line, based on information on a running state of the vehicle; and a process of generating a reaction force to an operation on a steering device of the vehicle by a driver in the direction to approach the boundary line such that the reaction force corresponds to a relative position of the vehicle to the boundary line, the process being executed in a case where an affirmative determination is made in the process of determining.