Lane Centering Sensitivity Adjustment for Automated to Manual Transition
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Solution Overview
Problem
There is a need to improve the lane centering performance of vehicle operators after transitioning from automated steering control to manual control, as the ability to maintain lateral control is often diminished, posing safety concerns.
Innovation Solution
A centering system that modifies the sensitivity level of the lane positioning system to induce finer path following and provides alerts for excessive deviations, using past lane centering performance data and current control inputs to adjust sensitivity levels dynamically, ensuring the operator can maintain the vehicle within the lane until a stability threshold is met.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sensitivity level of the lane positioning system is increased to improve lane centering performance, then the operator's ability to maintain lane centering is enhanced, but the system complexity and operator workload increase
Solution Approach 1:
The sensitivity level of the lane positioning system is made dynamic rather than static. The system automatically adjusts the sensitivity level based on the operator's current lane centering performance and transition state, allowing the sensitivity to adapt in real-time without manual intervention or complex configuration mechanisms.
Solution Approach 2:
The system implements feedback by continuously monitoring the operator's lane centering performance and using this information to adjust the sensitivity level. The deviation score calculated from vehicle position data provides feedback that triggers sensitivity adjustments, creating a closed-loop control system that improves reliability without increasing device complexity.
2Reliability
If the sensitivity level is modified to induce finer path following, then lane centering performance is improved, but the operator may experience increased stress or pressure
Solution Approach 1:
The system applies preliminary action by increasing sensitivity before the operator fully transitions to manual control. By detecting the transition state and proactively adjusting sensitivity during the handover period, the system prepares the operator for manual control demands without suddenly imposing high stress levels.
Solution Approach 2:
The sensitivity level is dynamically adjusted based on the operator's performance rather than being constantly high. The system increases sensitivity only when needed (during transition and when performance degrades) and reduces it when the operator performs well, thereby improving reliability while minimizing unnecessary operator stress.
3Reliability
If automated steering control is used to maintain lane position, then lane centering performance is maintained, but the operator's lateral control ability diminishes after transition to manual control
Solution Approach 1:
The system performs preliminary action by detecting the transition from automated to manual control and immediately adjusting sensitivity to compensate for the operator's diminished control ability. This proactive adjustment occurs at the moment of transition, helping the operator regain lateral control proficiency without requiring extensive retraining or manual adaptation time.
Solution Approach 2:
The system implements feedback by continuously monitoring lane position and calculating deviation scores that reflect the operator's control ability. When the operator transitions to manual control, the feedback mechanism triggers sensitivity adjustments that compensate for the temporary loss of lateral control ability, thereby maintaining ease of operation during the transition period.
Data Source
AI summary
System, methods, and other embodiments described herein relate to improving lane centering performance of an operator of a vehicle after transitioning from an automated mode of operation to a manual mode of operation. In one embodiment, a method includes, in response to detecting a transition to the manual mode of operation, modifying a sensitivity level of a lane positioning system from a first value to a second value to induce finer path following by the operator. The method includes controlling the lane positioning system according to the sensitivity level. The method also includes resetting the sensitivity level to the first value upon determining that a deviation score satisfies a stability threshold. The deviation score characterizes deviations of the vehicle from a centerline resulting from operator control inputs.