Vehicle Control System Using Map-Based Road Section Recognition
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Solution Overview
Problem
Existing vehicle control systems do not adequately consider the actual road environment when adjusting control targets, leading to suboptimal vehicle control and ride quality.
Innovation Solution
A vehicle control system incorporating vehicle-mounted sensors, a map database, a control rule database, and an electronic control unit that recognizes the vehicle's position and road section to apply specific control rules and actuator operating ranges, ensuring appropriate control techniques and operating characteristics based on real-time road conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If control target is optimized uniformly based on altitude, gradient, and curvature parameters, then control system can be simplified, but vehicle control appropriateness deteriorates
Solution Approach 1:
The patent applies local quality by associating different control rules with different road sections based on their specific characteristics. Each road section has customized control rules that consider local environmental factors such as road curvature, gradient, and surrounding features, rather than applying a uniform control strategy across all sections. This enables appropriate vehicle control for each specific road section while maintaining system manageability.
Solution Approach 2:
The patent segments the road into multiple road sections, each with its own control rules. The road is divided based on characteristics such as curvature, gradient, and surrounding environment. This segmentation allows the control system to apply specific control strategies to each segment, improving overall control appropriateness without requiring a completely complex unified system.
2Reliability
If control rules are customized for each road section, then vehicle control appropriateness improves, but device complexity increases
Solution Approach 1:
The patent implements universality by using a standardized control rule association mechanism that can handle multiple road section types. The control rule database and association unit provide a universal framework that works across different road sections, reducing the need for separate complex control systems for each section type while still enabling customized control.
Solution Approach 2:
The patent applies preliminary action by pre-establishing control rules for different road section types before actual vehicle operation. The control rules are associated with road sections in advance based on road characteristics, so that when the vehicle enters a specific road section, the appropriate control rule is already ready to be applied, reducing real-time computational complexity.
3Device complexity
If uniform control values are used across different road sections, then device complexity is reduced, but vehicle stability deteriorates
Solution Approach 1:
The patent applies local quality by implementing control rules that are specific to each road section's characteristics. Instead of using uniform control values, the system adjusts control parameters based on local road conditions such as curvature, gradient, and surrounding environment, thereby maintaining vehicle stability across diverse road sections without requiring excessive system complexity.
4Measurement precision
If detailed road section recognition is implemented, then control rule accuracy improves, but information processing time increases
Solution Approach 1:
The patent applies preliminary action by pre-processing and storing control rules for different road section types in a database before actual vehicle operation. The system pre-establishes the association between road characteristics and control rules, so that during real-time operation, the control unit can quickly retrieve and apply the appropriate pre-defined control rule without performing complex real-time analysis, thus reducing processing time while maintaining accuracy.
Solution Approach 2:
The patent uses copying by storing control rules for different road section types in a database. Once control rules are established for a particular road section type, they can be copied and applied to similar road sections, reducing the need for repeated analysis and improving both accuracy and processing efficiency.
Data Source
AI summary
A vehicle control system includes a vehicle-mounted sensor, a map database, a control rule database, and an electronic control unit. The electronic control unit is configured to recognize the position of a vehicle on a map; control traveling of the vehicle by using one of a plurality of control rules based on the position of the vehicle on the map, map information, and a detection result of the vehicle-mounted sensor; recognize a road section in the traveling direction of the vehicle based on the position of the vehicle on the map and the map information; specify a control rule used in the road section based on the recognized road section and control rule data; and control traveling of the vehicle in the road section by using the specified control rule.