Vehicle Lateral Steering Control Using Collision-Risk Feedback
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Solution Overview
Problem
Existing control methods for autonomous vehicles do not effectively account for a variety of passenger preferences and environmental factors, leading to inconsistent and potentially unsafe lateral movement corrections.
Innovation Solution
A control method and system that adjusts lateral movement by considering both internal vehicle parameters and external environmental factors, such as collision risk, to provide a safer and more comfortable driving experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fuzzy logic is used to control lateral movement, then passenger comfort is improved, but control complexity increases
Solution Approach 1:
The patent changes the control parameter from complex fuzzy logic probability factors to a simple lateral offset distance measurement. This allows the system to maintain passenger comfort through smooth corrections while significantly reducing control complexity by using a straightforward proportional control mechanism based on lateral position error.
2Manufacturing precision
If lateral offset correction is applied aggressively, then trajectory accuracy is improved, but collision risk increases
Solution Approach 1:
The patent implements dynamic control by adjusting the lateral correction amount based on the vehicle's longitudinal position relative to the trajectory. When the vehicle is in a safe zone, smaller corrections are applied for comfort. When approaching critical positions, the system increases correction intensity to maintain trajectory accuracy, while continuously monitoring collision risk to prevent harmful actions.
Solution Approach 2:
The system uses feedback from multiple sensors to continuously monitor lateral offset, longitudinal position, and environmental conditions. This feedback loop allows the control system to adaptively adjust correction intensity, increasing it when trajectory accuracy is needed and decreasing it when collision risk is detected, thus resolving the contradiction between precision and safety.
Data Source
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AI summary
The invention relates to a control method for controlling the lateral movement of a motor vehicle (10), the motor vehicle comprising steering means for following a predetermined trajectory (Tp) on a road (20). The control method comprises a step (E5) of selecting at least one environmental parameter (Pextj) external to the motor vehicle (10), the selection of the environmental parameter being a function of a collision risk (Rj) associated with this environmental parameter. The command (K) for the steering means is determined according to the collision risk (Rj) and according to the lateral shift (DL) of the motor vehicle (10).