Vehicle Stability Control on Split-Friction and Black Ice
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Solution Overview
Problem
Existing vehicle control systems lack the capability to effectively enhance vehicle stability on varying road surface conditions such as split friction and black ice, leading to potential loss of control and accidents.
Innovation Solution
A vehicle control device and method that determines road surface conditions using vehicle driving information, deciding whether to brake and control the steering device through ABS and counter-steer controls, respectively, to maintain stability on split friction and black ice surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional braking and steering control is used, then the control system is simple, but the vehicle loses stability on split friction and black ice road surfaces
Solution Approach 1:
The control device determines road surface conditions (split friction or black ice) in advance and preemptively adjusts braking and steering controls before the vehicle encounters instability, preventing loss of control rather than reacting after the fact
Solution Approach 2:
The system applies different control strategies to different wheels based on detected road surface conditions - for example, applying ABS control selectively to wheels on low-friction surfaces while maintaining normal control on high-friction surfaces, and using counter-steer control to compensate for differential friction forces
2Reliability
If road surface condition detection and adaptive control are implemented, then vehicle stability is enhanced, but the control system becomes more complex
Solution Approach 1:
The control device integrates multiple functions into a single system - it detects road surface conditions, determines whether ABS control is needed, and executes counter-steer control, allowing one control device to perform what would traditionally require multiple separate systems
Solution Approach 2:
The system dynamically changes control parameters (braking force distribution, steering angle) based on detected road surface conditions, transitioning between normal control mode, ABS control mode, and counter-steer control mode to maintain stability across varying friction conditions
Data Source
AI summary
The present embodiments relate to a vehicle control device and method, and a vehicle system. The vehicle control device may include a determinator determining a road surface condition based on vehicle driving information and determining whether to brake a vehicle based on a result of determining the road surface condition and a vehicle controller controlling a braking device according to a result of determining whether to brake the vehicle by the determinator and controlling a steering device based on control of the braking device.