Vehicle Controller Abnormality Assessment for Autonomous Driving Continuity
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Solution Overview
Problem
Existing vehicle control systems for autonomous driving face challenges in maintaining convenience when abnormalities occur in the shift control system, as they often require vehicles to move to a turnout place, potentially deteriorating the travel experience.
Innovation Solution
A vehicle control device that determines the propriety of autonomous driving travel based on the type of abnormality in the shift control system, allowing the vehicle to continue traveling to a target location even if abnormalities like failure in switching to a parking range or forward-backward switching occur, using redundant communication paths and predictive routing to ensure continued operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle stops at a turnout place when an abnormality occurs in the shift control system, then the safety is improved, but the convenience of autonomous driving travel deteriorates
Solution Approach 1:
The controller changes the response parameter from binary (stop at turnout place or continue) to a graduated scale by identifying specific abnormality types (parking range switching failure, forward-backward switching failure, communication path failure) and matching them against continuation conditions. This parameter change enables differentiated responses: aborting only when necessary while continuing when safe, thereby improving convenience without compromising safety.
2Reliability
If the autonomous driving travel is cancelled when an abnormality occurs in the shift control system, then the reliability is improved, but the productivity deteriorates
Solution Approach 1:
The system performs preliminary identification of abnormality types and evaluation of continuation conditions before making the decision to abort or continue autonomous driving travel. By预先 (in advance) establishing the criteria for continuation (target location reachability, shift range switchability, communication path redundancy), the system can quickly determine whether to maintain operation, thus improving productivity without sacrificing reliability.
Solution Approach 2:
The system changes the decision parameter from a conservative binary state (abort on any abnormality) to a conditional state based on abnormality type and system capability. This enables the vehicle to maintain autonomous driving travel in scenarios where the abnormality does not prevent reaching the target location, thereby increasing execution scenarios and productivity while maintaining adequate reliability through targeted abort decisions.
3Reliability
If the vehicle requires moving to a turnout place when shift control system abnormality occurs, then the safety is improved, but the loss of time increases
Solution Approach 1:
The system changes the time parameter by eliminating unnecessary turnout place maneuvers through intelligent abnormality assessment. When the abnormality type and continuation conditions indicate that the vehicle can safely reach the target location, the system continues autonomous driving travel without requiring a time-consuming stop at a turnout place, thereby reducing time loss while maintaining safety through targeted abort decisions only when necessary.
Data Source
AI summary
A vehicle control device is applied to a vehicle including at least a shift control system configured to switch a shift range. The vehicle control device is configured to control the vehicle to perform autonomous driving travel without depending on an operation of a driver in at least one driving operation. The vehicle control device includes a controller. The controller is configured to determine the propriety of travel by the autonomous driving travel according to a type of abnormality that occurs in the shift control system. The controller is configured to perform travel control of the vehicle according to the propriety of the travel by the autonomous driving travel.