Minimal Risk Maneuver Control for Autonomous Driving 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

The vehicle is equipped with a minimal risk maneuver (MRM) system that autonomously performs actions like steering, deceleration, or lane changes to mitigate risks, transitioning from an autonomous driving state to a minimal risk condition and back to normal driving when safe.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the vehicle performs autonomous driving without driver intervention, then driving convenience is improved, but the risk of accidents during unexpected events increases

Engineering Contradiction:

Improvedriving convenienceVSAvoidsafety during unexpected events

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The system performs preliminary risk assessment continuously during autonomous driving and pre-preps minimal risk maneuver plans. When an unexpected event occurs, the system has already evaluated potential risks and prepared response strategies, enabling rapid transition to safe maneuver without driver intervention.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The minimal risk maneuver system acts as an intermediary safety layer between the autonomous driving system and the environment. It monitors autonomous driving operations and intervenes with corrective maneuvers when risks are detected, bridging the gap between automated operation and safety assurance.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If the vehicle performs minimal risk maneuver to eliminate risk, then safety is improved, but driving stability may be affected

Engineering Contradiction:

ImprovesafetyVSAvoiddriving stability

Core Design Contradiction:

ReliabilityVSStability of the object's composition

Solution Approach 1:

The system dynamically adjusts the minimal risk maneuver based on real-time vehicle state and environmental conditions. Rather than applying fixed corrective actions, the maneuver parameters (steering angle, deceleration rate, lane change timing) are continuously optimized to maintain driving stability while eliminating safety risks.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system implements closed-loop feedback during minimal risk maneuver execution, continuously monitoring vehicle response and environmental changes. This feedback mechanism allows real-time adjustment of maneuver intensity and direction, preventing excessive corrections that could compromise driving stability while ensuring risk elimination.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS20230382371A1Vehicle for performing minimal risk maneuver and method for operating the same

Publication Date: 2023.11.30 HYUNDAI MOTOR CO LTD

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.