Roundabout Speed Control Aligned With Driver Habits
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Solution Overview
Problem
Autonomous vehicles experience driving discomfort and instability at roundabouts due to mismatch between their fixed deceleration strategies and actual driver habits, leading to frequent deactivation of autonomous driving functions.
Innovation Solution
A method for controlling autonomous driving that generates speed information based on user driving patterns, adjusts deceleration levels, and controls vehicle indicators to match the user's driving habits, including yield control and turn signal management at roundabouts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed deceleration strategy is used for autonomous driving at roundabouts, then the control system is simple and easy to implement, but the driving behavior does not match user habits causing driving discomfort
Solution Approach 1:
The patent applies dynamics by transitioning from a fixed deceleration strategy to a dynamic one that adapts to user driving habits. The system collects driving data during manual driving phases, analyzes user preferences for deceleration timing and magnitude, and adjusts autonomous driving behavior accordingly. This makes the control system flexible and adaptive rather than rigid and static, resolving the contradiction between simplicity and comfort.
Solution Approach 2:
The patent implements feedback mechanisms by continuously monitoring user driving behavior at roundabouts during manual driving, analyzing this data to understand user preferences, and using this information to adjust future autonomous driving decisions. The system provides feedback to users about the learned behavior and allows correction, creating a closed-loop system that improves driving comfort while managing complexity through structured adaptation.
2Adaptability or versatility
If autonomous driving uses conventional speed maintenance strategy, then the control logic is simple, but the vehicle cannot properly handle various entry directions at roundabouts
Solution Approach 1:
The patent applies segmentation by dividing the roundabout driving task into distinct phases: approach phase, entry phase, circulation phase, and exit phase. Each phase has specific control logic tailored to its requirements, allowing the system to handle different entry directions appropriately without overwhelming complexity. The segmentation enables modular development and maintenance of control strategies.
Solution Approach 2:
The patent uses parameter changes by adjusting speed, deceleration rate, and steering angle based on the specific entry direction and traffic conditions at roundabouts. The system modifies these parameters dynamically according to the learned user preferences and real-time environmental conditions, enabling adaptable behavior across different scenarios while maintaining manageable control logic through parameter-based adjustments.
3Reliability
If the autonomous driving function deactivates frequently due to user anxiety, then the system responds to user preferences, but the productivity and efficiency of autonomous driving are reduced
Solution Approach 1:
The patent applies preliminary action by proactively learning user driving habits during manual driving phases before autonomous driving is activated. The system collects and analyzes driving data in advance, builds a user profile, and prepares customized control strategies ahead of time. This preliminary preparation reduces the need for frequent deactivation during autonomous driving, as the system is already aligned with user preferences, thereby improving both reliability and productivity.
Data Source
AI summary
A method for controlling autonomous driving and a vehicle, includes generating speed information for driving control of the vehicle at a roundabout based on driving setting information of a user related to the roundabout; generating driving control information based on the speed information; and controlling an operation indicator of a vehicle in an area including a place of the roundabout determined by a route of the vehicle and controlling a driving of the vehicle at the roundabout according to the driving control information. The driving setting information is generated in response to a mode selected from a designated mode and a driving pattern mode by the user.