Vehicle Guidance Trajectory Optimization via Two-Stage Corridor Determination
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Solution Overview
Problem
Existing driver assistance systems lack an efficient method to dynamically adjust vehicle trajectories based on multiple parameters, including road conditions, vehicle capabilities, and driver intent, leading to suboptimal guidance and control.
Innovation Solution
A driver assistance system that uses a two-stage method to determine a travel corridor based on surroundings and adjusts the trajectory within it considering vehicle movement, engine, brake, steering, and driver parameters, ensuring optimal trajectory selection and actuator capabilities, while also accounting for comfort and dynamic strategies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single-stage trajectory determination method is used, then the system is simple, but the trajectory optimization is insufficient and cannot consider multiple parameters simultaneously
Solution Approach 1:
The trajectory determination process is divided into two independent stages: first determining a travel corridor based on surroundings parameters, then determining the actual trajectory within the corridor based on additional parameters. This segmentation allows each stage to focus on specific parameters without overwhelming complexity, while achieving comprehensive optimization through the combination of both stages.
2Device complexity
If only surroundings parameters are considered for trajectory determination, then the guidance is simple, but the trajectory cannot be optimized for vehicle capabilities and driver intent
Solution Approach 1:
The parameter consideration is segmented into two groups: surroundings parameters (road width, curvature, traffic) used in the first stage to establish the travel corridor, and additional parameters (vehicle movement, engine operation, brake operation, steering, driver intent) used in the second stage to optimize the actual trajectory within the corridor.
Solution Approach 2:
The approach adds an additional dimension to trajectory optimization by introducing a second determination stage that considers vehicle-specific parameters and driver intent, thereby expanding the optimization space beyond what single-stage systems can achieve.
3Productivity
If vehicle actuator capabilities are not considered, then the trajectory calculation is faster, but the selected trajectory may not be executable by the vehicle
Solution Approach 1:
The system performs preliminary assessment of actuator availability and actuating reserves during the trajectory determination process, ensuring that the selected trajectory is executable by the vehicle's actual capabilities before finalizing the guidance command.
Data Source
AI summary
A method for guiding a vehicle, at least one parameter of the surroundings of the vehicle being detected by at least one sensor; a travel corridor being ascertained based on the parameter; a trajectory being ascertained as a function of at least one other parameter within the travel corridor; and the guidance of the vehicle being adapted as a function of the ascertained trajectory.