Vehicle Height Control for Strong Wind Zones
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Solution Overview
Problem
Current vehicle height control systems lack logic to manage aerodynamic resistance during strong wind conditions, particularly at medium/low speeds, which affects steering stability and fuel efficiency.
Innovation Solution
A vehicle height control apparatus and method that determines strong wind zones and traveling situations using wind speed and vehicle speed information, generating control signals to adjust vehicle height or activate braking devices, enhancing steering stability and fuel efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If vehicle height control is performed based on high speed condition only, then fuel efficiency is improved at high speed, but steering stability deteriorates in strong wind zones at medium/low speed
Solution Approach 1:
The control system dynamically adjusts vehicle height based on real-time detection of strong wind zones and current vehicle speed. The air suspension control device switches between different control modes (high-speed mode, strong-wind mode, or normal mode) depending on the combination of wind conditions and speed, making the system adaptable to varying environmental conditions rather than relying on a fixed high-speed threshold
Solution Approach 2:
The system changes the control parameter from solely vehicle speed to a combination of vehicle speed and wind speed conditions. By introducing wind speed as an additional parameter and defining strong wind zones through map information, the control logic expands to account for aerodynamic resistance caused by crosswinds, enabling appropriate height adjustment in strong wind zones even at medium/low speeds
2Use of energy by moving object
If vehicle height is lowered to reduce aerodynamic resistance, then fuel efficiency is improved, but vehicle comfort and suspension performance deteriorate
Solution Approach 1:
The control system applies height adjustment selectively based on local conditions - only when the vehicle is detected to be in a strong wind zone and traveling at medium/low speed. The air suspension control device maintains normal reference vehicle height in all other conditions, ensuring comfort is preserved while achieving fuel efficiency benefits only where aerodynamic resistance from crosswinds is the dominant concern
3Stability of the object's composition
If vehicle height control logic is expanded to include strong wind zone detection, then steering stability in strong wind is improved, but system complexity increases
Solution Approach 1:
The system uses map information containing pre-stored wind speed data as an intermediary to identify strong wind zones. Instead of requiring complex real-time wind sensing and processing, the control device queries pre-prepared map data based on vehicle position, which simplifies the control logic while enabling strong wind detection and appropriate height adjustment responses
Data Source
AI summary
A vehicle height control apparatus considering a strong wind traveling situation may include: a strong wind zone determining unit for obtaining wind speed information of a current position by using map information to which the wind speed information is corresponded and current position information of a vehicle, and generating strong wind zone information by comparing the obtained wind speed information with a predetermined reference wind speed to determine a strong wind zone; a strong wind traveling situation determining unit for generating strong wind traveling situation information by determining the strong wind traveling situation based on the strong wind zone information and the vehicle speed information of the current position; and a control signal generating unit for generating a control signal of a vehicle height adjusting device according to the strong wind traveling situation information.