Vehicle Stability Control Using Steering Angle Deviation Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional stability control systems in vehicles, such as ESC, intervene late, leading to increased safety risks due to inadequate support for inexperienced drivers and 'virtual drivers' in maintaining vehicle stability, especially during unstable driving conditions.
Innovation Solution
A method for controlling vehicles that involves determining a trajectory, target steering angle, and actual steering angle, detecting instability through a steering angle deviation, and using vehicle actuators to intervene early and stabilize the vehicle before significant deviations occur.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional stability control systems intervene only when intervention threshold is exceeded, then false interventions are prevented, but vehicle stability is not maintained early enough leading to increased safety risks
Solution Approach 1:
The system performs preliminary detection of instability by monitoring steering angle deviation before the vehicle actually becomes unstable. The method calculates a predicted steering angle based on trajectory and compares it with the actual steering angle to detect deviations early, allowing intervention before the instability manifests in vehicle motion, thus preventing the need for reactive correction
2Reliability
If intervention threshold is set high to prevent incorrect intervention, then false stabilization is avoided, but vehicle deviations from planned path increase considerably
Solution Approach 1:
The system implements continuous feedback by monitoring the steering angle deviation between target and actual values. This feedback loop allows the system to detect instability early and trigger stabilization measures before significant path deviations occur, maintaining both accuracy and reliability
3Device complexity
If stability control system intervenes late, then system complexity is reduced, but considerable space is required and safety risk increases
Solution Approach 1:
The system uses preliminary detection through steering angle comparison to identify instability trends before they manifest as vehicle motion deviations. By detecting the deviation between target and actual steering angles early in the process, the system can intervene proactively with simple control actions, avoiding the need for complex reactive control algorithms
Data Source
AI summary
A method for controlling a vehicle in a driving situation includes: determining a trajectory of the vehicle for the driving situation; determining a target steering angle on the basis of the trajectory; determining an actual steering angle of the vehicle in the driving situation; determining a steering angle deviation between the determined target steering angle and the determined actual steering angle; providing a steering angle tolerance value for the steering angle deviation; providing early detection of instability of the vehicle when the determined steering angle deviation violates the steering angle tolerance value; and in response to the early detection of instability of the vehicle: executing at least one driving dynamics intervention using at least one vehicle actuator of the vehicle to counteract the instability of the vehicle. A driver assistance system, a vehicle and a computer program product are configured to perform the method.