Vehicle Stability Control via Dynamic Parameter Switching
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Solution Overview
Problem
Existing vehicle control systems fail to intervene early and strongly enough in critical driving situations, potentially leading to unstable vehicle states and collisions, as they prioritize stabilization over 'sporty' driving dynamics and are delayed in interventions.
Innovation Solution
Dynamic switching of closed-loop control parameters by the driving dynamics regulator in response to critical situations, including reducing control thresholds and intervention delays, and pre-charging brakes, to enable earlier and more aggressive interventions and calculate avoidance paths using sensor data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the driving dynamics regulator prioritizes stabilization over sporty driving dynamics, then vehicle stability is improved, but intervention timing is delayed and intervention strength is reduced
Solution Approach 1:
The control parameters of the driving dynamics regulator are made dynamically adjustable based on detected critical situations. When a critical situation is detected by the receiver, the regulator switches to a modified control mode with reduced thresholds and shorter intervention delays, allowing earlier and stronger interventions without compromising normal stabilization performance
Solution Approach 2:
The system changes control parameters (thresholds and intervention delays) based on the detected driving situation. In critical situations, thresholds are reduced and intervention delays are shortened, enabling the system to intervene earlier and more strongly while maintaining stability in normal conditions
2Reliability
If the driving dynamics regulator intervenes earlier and more strongly in critical situations, then collision avoidance capability is improved, but vehicle stability control becomes more aggressive
Solution Approach 1:
The system dynamically adjusts its control characteristics based on the situation. In critical situations, it switches to an aggressive control mode with reduced thresholds for early intervention, while in normal conditions it maintains smooth, sporty driving behavior characteristics
Solution Approach 2:
The system takes preliminary action by detecting critical situations early and switching control modes before the actual collision risk materializes. This allows preparatory strengthening of control measures without affecting normal driving smoothness
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances vehicle stability and safety by allowing earlier and more effective interventions to prevent collisions, maintaining desired driving behavior within physical limits while reducing the risk of veering off course.
Implementation Method 1
a sensor system which senses the surroundings of the vehicle and which emits and receives radar signals or lidar signals
Implementation Method 2
a sensor system which senses the surroundings of the vehicle and which emits and receives radar signals or lidar signals
Data Source
AI summary
The invention relates to a method and a device for performing open-loop or closed-loop control of the driving stability of a vehicle and for avoiding collisions with an object located in the traffic lane. The invention also relates to a closed-loop driving stability controller. The method according to aspects of the invention comprises: determining based on environmental signals whether a critical situation in terms of driving dynamics, in particular an imminent collision, exists, calculating an avoidance path if a critical situation in terms of driving dynamics exists, determining based on a plurality of input variables pressures for individual brakes of the vehicle, and activating preparatory measures of the driving dynamics regulator, in particular dynamic switching over of closed-loop control parameters if the critical situation in terms of driving dynamics exists. The device and the closed-loop driving stability controller are suitable for carrying out the method.