Integrated Chassis Control for Side Wind Stabilization
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Solution Overview
Problem
Existing vehicle control systems, such as MDPS and active suspension systems, are inadequate in stabilizing a vehicle's behavior when subjected to strong side winds, which can cause unintended changes in driving direction and increased risk of lane departure and accidents.
Innovation Solution
An integrated chassis control system that includes sensors to detect surrounding vehicles and the vehicle's behavior, determinators to assess the side wind's influence and abnormal behavior, and controllers to perform semi-active and active chassis system controls, such as adjusting steering and suspension, to stabilize the vehicle's behavior.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If MDPS system and active/semi-active suspension systems are used to compensate for side wind effects, then vehicle behavior is stabilized to some extent, but the system cannot stabilize vehicle behavior when side wind influence is large enough to change driving direction
Solution Approach 1:
The patent combines multiple chassis control systems (MDPS, active suspension, semi-active suspension) into an integrated control architecture that coordinates their operations. The controller receives inputs from all systems and generates coordinated control commands to achieve stable vehicle behavior under strong side winds, overcoming the limitation of individual systems working in isolation.
Solution Approach 2:
The system predicts side wind occurrence and intensity in advance using sensor data (anemometers, weather sensors, vehicle dynamics sensors) and prepares appropriate control responses before the side wind fully impacts the vehicle. This allows the integrated chassis control system to proactively adjust steering and suspension settings to prevent excessive vehicle behavior changes.
2Reliability
If integrated chassis control system performs active control to stabilize vehicle behavior under strong side wind, then vehicle behavior stability is improved, but system complexity increases
Solution Approach 1:
The integrated chassis control system is divided into functional modules: side wind detection module (sensors), prediction module (controller algorithms), and execution module (MDPS, active suspension, semi-active suspension). Each module performs a specific function, and the controller coordinates them through standardized interfaces. This modular segmentation reduces overall system complexity while maintaining effective integrated control.
Data Source
AI summary
An integrated chassis control system includes a first sensor configured to sense a first vehicle driving in a lane adjacent to a lane in which an own vehicle is driving and to sense behavior information of the first vehicle, a second sensor configured to sense a variation in behavior of the own vehicle, a first determinator configured to determine a degree of influence of a side wind, which is predicted to occur due to the first vehicle, based on the behavior information of the first vehicle, a second determinator configured to determine a variance in abnormal behavior of the own vehicle based on information sensed by the second sensor, a first controller configured to perform a semi-active chassis system control, and a second controller configured to perform an active chassis system control.