Vehicle Minimal Risk Maneuver Control for Path Deviation Recovery
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Solution Overview
Problem
Autonomous vehicles face risks during unexpected events, such as component failures or deviations from designated driving paths, which can lead to accidents if not properly managed.
Innovation Solution
A vehicle system capable of performing minimal risk maneuvers (MRMs) autonomously, using sensors and controllers to assess risks and execute maneuvers like steering, deceleration, or lane changes to mitigate hazards and transition to a safe state without driver intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If autonomous driving is performed without driver intervention, then productivity is improved, but reliability deteriorates due to unexpected events and risks
Solution Approach 1:
The system performs preliminary risk assessment before executing autonomous driving maneuvers. The controller continuously evaluates potential risks and prepares minimal risk maneuver protocols in advance, so when unexpected events occur, the vehicle can immediately execute pre-planned safe responses rather than reacting without preparation.
Solution Approach 2:
The system implements continuous feedback loops where sensor data feeds into the controller, which assesses current risk levels and adjusts driving behavior accordingly. When risks are detected, the system provides feedback to initiate minimal risk maneuvers, and continues monitoring until the risk is eliminated, creating a closed-loop safety mechanism.
2Reliability
If minimal risk maneuvers are executed autonomously, then reliability is improved, but device complexity increases
Solution Approach 1:
The autonomous control system is segmented into distinct functional modules: sensor units for detection, a controller for risk assessment, and execution units for minimal risk maneuvers. This segmentation allows each component to perform its specific function independently, making the overall complex system more manageable and maintainable while ensuring reliable risk response.
Solution Approach 2:
The controller is designed with multi-functionality, serving both normal autonomous driving control and minimal risk maneuver execution. Rather than having separate dedicated systems, the same controller assesses risks, decides on maneuvers, and executes them, reducing overall system complexity while maintaining comprehensive safety functionality.
Data Source
AI summary
Disclosed is a vehicle which supports a minimal risk maneuver. The vehicle performs driving, perform the minimal risk maneuver when a specific event occurs during the driving, eliminates the risk of the vehicle in accordance with the initiation of the minimal risk maneuver, ends the minimal risk maneuver when the risk of the vehicle is eliminated, and performs the driving again after ending the minimal risk maneuver.