Integrated Chassis Control for Post-Avoidance Stability
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Solution Overview
Problem
Existing integrated chassis control systems for vehicles fail to effectively maintain lane keeping performance after forward collision avoidance, as they primarily focus on collision avoidance rather than stability control.
Innovation Solution
An integrated chassis control method that utilizes rear wheel steering (RWS), electronic control suspension (ECS), motor driven power steering (MDPS), electronic stability control (ESC), and all-wheel drive (AWD) to perform stability control after collision avoidance, dividing steering assist controls into stages based on vehicle information and thresholds for steering angular speed, steering angle, yaw rate, and vehicle speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If integrated chassis control focuses on forward collision avoidance, then collision avoidance performance is improved, but lane keeping performance after avoidance deteriorates
Solution Approach 1:
The control method segments the collision avoidance process into distinct phases: avoidance steering assist control (when forward collision risk is detected) and stability steering assist control (after avoidance is completed). This segmentation allows the system to optimize control strategies for each phase, ensuring both effective collision avoidance and stable lane keeping afterward.
Solution Approach 2:
The system dynamically switches between different control modes based on the driving situation. When forward collision risk is detected, the system activates avoidance steering assist control; after avoidance is completed, it transitions to stability steering assist control. This dynamic adaptation ensures optimal performance across different phases of the avoidance maneuver.
2Productivity
If avoidance steering assist control is applied during forward collision risk, then collision avoidance capability is improved, but vehicle stability during and after avoidance deteriorates
Solution Approach 1:
The system prepares for stability control in advance by having the stability steering assist control ready to activate immediately after avoidance is completed. The control system continuously monitors avoidance completion conditions and pre-configures the transition to stability control, ensuring seamless handover and maintaining vehicle stability throughout the entire process.
Solution Approach 2:
The system uses feedback from sensors to detect when avoidance steering is completed and automatically transitions from avoidance steering assist control to stability steering assist control. This feedback mechanism ensures that stability control is activated at the appropriate moment, maintaining vehicle stability during and after the avoidance maneuver.
Data Source
AI summary
An integrated chassis control method may include stability control after avoidance performing stability steering assist control after avoiding a forward collision situation by avoidance steering assist control when the forward collision situation is verified by an integrated chassis controller.