Autonomous Vehicle Handover Timing Based on Driver Steering Input
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The switching time from autonomous driving mode to manual driving mode in autonomous vehicles is not effectively adjusted based on the driver's manual operation intervention, leading to potential vehicle deviation from the driving route and collision accidents.
Innovation Solution
A method to control the switching time by comparing values of yaw rate, deceleration, and shifting in the autonomous driving route with those varied by the driver's manual manipulation, and adjusting the switching time accordingly to ensure stable mode switching, safety, and prevent collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the autonomous driving control amount gradually decreases at a predetermined reduction rate during mode switching, then the vehicle control authority is transferred to the driver, but the vehicle may deviate from the driving route and cause collision accidents due to variability in driver's manual intervention amount
Solution Approach 1:
The autonomous driving controller continuously monitors the driver's manual manipulation amount during the switching period and uses this feedback to dynamically adjust the autonomous driving control amount. When the driver's manipulation amount deviates from the expected range, the controller provides corrective control signals to maintain the vehicle on the predetermined driving route, thus resolving the contradiction between enabling manual mode switching and ensuring driving safety.
Solution Approach 2:
The system dynamically changes the control parameters (autonomous driving control amount and switching time) based on the driver's actual manipulation behavior. The controller adjusts the reduction rate of autonomous control and the duration of the switching period in real-time according to the driver's intervention level, allowing flexible adaptation to different driving scenarios while maintaining safety.
2Adaptability or versatility
If the switching time from autonomous driving mode to manual driving mode is fixed, then the control process is simple, but it cannot adapt to different driver intervention levels and may cause vehicle deviation
Solution Approach 1:
The switching time is transformed from a fixed parameter to a dynamic parameter that automatically adjusts during the mode transition. The autonomous driving controller extends or shortens the switching period based on the driver's manipulation amount, enabling the system to adapt to different driving situations without requiring complex manual configuration or multiple fixed modes.
3Stability of the object's composition
If the autonomous driving control amount is reduced at a predetermined rate, then the mode switching follows a stable pattern, but it does not account for driver's driving habit and inclination leading to potential collisions
Solution Approach 1:
The system dynamically adjusts the control parameters (autonomous driving control amount and switching time) based on the driver's actual manipulation behavior. The controller adjusts the reduction rate of autonomous control and the duration of the switching period in real-time according to the driver's intervention level, allowing flexible adaptation to different driving scenarios while maintaining safety.
Data Source
AI summary
A method of controlling a time switching to a manual driving mode of an autonomous vehicle includes determining whether there is a request for switching to the manual driving mode, when there is the request, comparing at least one value of yaw rate, deceleration, and shifting in an autonomous driving route with at least one value of yaw rate, deceleration, and shifting by a driver's manual manipulation amount, and according to a size difference between the at least one value of yaw rate, deceleration, and shifting in the autonomous driving route and the at least one value of yaw rate, deceleration, and shifting by the driver's manual manipulation amount, performing a control operation of variably controlling the time switching from the autonomous driving mode to the manual driving mode.