Adjustable Vehicle Stability Control for Yaw and Wheel Slip
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Solution Overview
Problem
Existing vehicle stability control systems do not allow drivers to completely turn off stability control or adjust its level in specific situations, such as driving on a track.
Innovation Solution
A vehicle stability control device and method that includes an input unit for receiving a stability control level, a receiving unit for receiving vehicle driving information, and a stability control unit that controls driving force and braking force based on the stability control level and driving information, including yaw rate and wheel slip information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If stability control is activated to prevent wheel slip and improve driving stability, then vehicle safety is improved, but the driver cannot adjust or turn off the control in certain situations
Solution Approach 1:
The stability control system transitions from a static on/off state to a dynamic multi-level adjustment system. The control unit now accepts stability control level information and dynamically adjusts the control amount based on the selected level, allowing the system to adapt its behavior to different driving conditions and driver preferences while maintaining operational reliability.
Solution Approach 2:
The system introduces a new parameter - stability control level - that can be adjusted by the driver. This parameter change enables the control unit to modify the stability control amount, providing versatility in adjusting the system's intervention intensity while maintaining the core stability function across different operating conditions.
2Ease of operation
If the stability control system applies braking force to correct yaw rate deviations, then vehicle directional control is improved, but the control amount cannot be adjusted according to driver preferences
Solution Approach 1:
The yaw rate control mechanism evolves from a fixed control strategy to a dynamic adjustable system. The control unit now receives stability control level information and adjusts the braking force magnitude accordingly, allowing drivers to modify the aggressiveness of directional corrections while maintaining ease of operation during critical stability events.
Solution Approach 2:
The stability control system is segmented into distinct controllable parameters: yaw rate control and wheel slip control. Each parameter can be independently adjusted based on the selected stability control level, allowing granular adjustment of control amounts for different driving scenarios while maintaining overall system effectiveness.
3Reliability
If the stability control system applies driving force to correct wheel slip, then wheel slip prevention is improved, but the control amount cannot be adjusted according to driver preferences
Solution Approach 1:
The wheel slip control mechanism transitions from a static control amount to a dynamic adjustable parameter. The control unit receives stability control level information and adjusts the driving force magnitude applied to correct wheel slip, allowing drivers to modify the intensity of slip prevention while maintaining reliable wheel slip control functionality.
Solution Approach 2:
The system introduces adjustability to the driving force control parameter through the stability control level mechanism. This allows the control unit to modify the magnitude of driving force adjustments based on driver preferences while maintaining the core wheel slip prevention function across different operating conditions.
Data Source
Figure 1~2
Figure 3
Figure 4~5B
AI summary
In embodiments, a vehicle stability control device includes an input unit that receives a stability control level, a receiving unit that receives driving information, and a stability control unit configured to control a driving force and a braking force based on the stability control level received by the input unit and the driving information received by the receiving unit.