Autonomous Curve Speed Control in Vehicle Travel Steering
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle travel control systems face complexity in determining the appropriate speed for curved routes, as the determination process is complicated and influenced by whether the driver holds the steering wheel.
Innovation Solution
A travel control method and apparatus that includes autonomous speed and steering control functions, where the curved route speed control function operates regardless of its setting, allowing for simple determination of vehicle speed along curved routes by integrating sensors, a map database, and control devices to adjust speed based on the radius of curvature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the system determines whether the driver holds the steering wheel to set curved route speed, then the speed setting can be adapted to driver intent, but the determination process becomes complicated
Solution Approach 1:
The patent extracts the steering wheel holding detection function from the speed control decision-making process. By separating this detection function and making it independent, the system can determine curved route speed based solely on autonomous steering control activation, eliminating the need to continuously assess driver steering wheel holding status during speed determination.
Solution Approach 2:
The patent segments the speed control logic into distinct functional modules: autonomous steering control function, curved route speed control function, and their interaction rules. This segmentation allows each function to operate independently with clear activation conditions, simplifying the overall determination process while maintaining adaptability.
2Ease of operation
If the curved route speed control function requires explicit ON setting, then driver preference is respected, but the function may not operate when needed
Solution Approach 1:
The patent establishes preliminary activation conditions for the curved route speed control function: it automatically operates when autonomous steering control is activated, regardless of the curved route speed control function's explicit ON/OFF setting. This preliminary action ensures the function is available when needed without requiring additional driver input.
Solution Approach 2:
The patent makes the autonomous steering control function serve multiple purposes: it not only controls steering but also acts as the activation condition for curved route speed control. This multi-functionality simplifies the activation mechanism while ensuring reliable operation in appropriate conditions.
Data Source
AI summary
A travel control method includes using the vehicle to autonomously control a travel of the vehicle. The vehicle has an autonomous speed control function for autonomously controlling a traveling speed of the vehicle and an autonomous steering control function for autonomously controlling the steering of the vehicle. The autonomous speed control function includes a curved route speed control function for controlling the traveling speed of the vehicle at a set speed corresponding to the size of a curve of a travel route. The curved route speed control function can be set to ON/OFF. Each of the autonomous speed control function and the autonomous steering control function can be set to ON/OFF. When the autonomous speed control function and the autonomous steering control function are set to ON, the curved route speed control function is operated regardless of whether the curved route speed control function is set to ON or OFF.