Crosswind Compensation Control During Vehicle Turning
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Solution Overview
Problem
Existing vehicle control systems fail to effectively detect and mitigate crosswind effects when a vehicle is turning, leading to potential lane deviation and increased risk of accidents, particularly in SUVs and VANs, due to false crosswind detection and inadequate steering compensation.
Innovation Solution
A vehicle control apparatus and method that utilizes sensors to detect crosswind conditions while turning, comparing actual yaw rates and transverse accelerations with reference values to calculate partial braking and steering torques, enhancing stability by compensating for steering angle deviations through coordinated braking and steering controls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If crosswind detection is performed only when the vehicle is traveling straight, then false detection is reduced, but crosswind detection capability during turns is lost
Solution Approach 1:
The system dynamically adjusts crosswind detection based on vehicle operating conditions. It determines whether the vehicle is turning using steering angle sensors and only performs crosswind detection when the vehicle is traveling straight, adapting the detection algorithm to the current driving state to avoid false detections during turns while maintaining detection capability when appropriate
Solution Approach 2:
The system changes detection parameters based on vehicle state. By monitoring steering angle and vehicle speed parameters, the system enables or disables crosswind detection functionality, switching between detection modes to balance accuracy and coverage based on real-time operating conditions
2Device complexity
If only yaw rate comparison is used for crosswind detection, then detection simplicity is maintained, but false detection frequency increases
Solution Approach 1:
The crosswind detection process is segmented into multiple independent evaluation stages. The system separately evaluates yaw rate data, transverse acceleration data, and vehicle state data, then integrates these segmented assessments to make a final crosswind detection determination, reducing false positives through multi-factor verification
Solution Approach 2:
The system implements feedback mechanisms where detection results from multiple parameters (yaw rate, transverse acceleration) are continuously evaluated and cross-validated. The feedback loop compares actual sensor readings against expected values under normal conditions, adjusting detection thresholds based on accumulated data to reduce false detections
3Device complexity
If only partial braking control is applied in response to crosswind, then system simplicity is maintained, but lane departure prevention effectiveness is reduced
Solution Approach 1:
The system merges two control functions into a unified crosswind compensation system. It combines partial braking control (applying brake force to specific wheels) with steering control (adjusting steering angle) to generate a coordinated response that simultaneously counteracts the crosswind force and maintains lane position, achieving reliable lane departure prevention through integrated control
4Device complexity
If steering angle deviation is not compensated, then control system simplicity is maintained, but straight-line driving ability deteriorates
Solution Approach 1:
The system implements feedback control by continuously monitoring steering angle deviations caused by crosswind compensation actions. It measures the actual steering angle using sensors, compares it against the desired straight-line trajectory, and applies corrective steering torque to eliminate the deviation, ensuring the vehicle maintains accurate straight-line driving capability
Solution Approach 2:
The system applies counteracting steering torque to compensate for steering angle deviations. When crosswind compensation through braking causes the vehicle to deviate from its intended path, the steering control system generates an opposing torque to counterbalance this deviation, restoring the vehicle to its correct trajectory
Data Source
AI summary
Disclosed herein are an apparatus and method for controlling a vehicle. The apparatus for controlling a vehicle includes a sensor unit configured to output a signal corresponding to behavior information on a vehicle and a signal corresponding to information on an external environment of the vehicle, a controller configured to calculate a crosswind tendency including information on a strength and a direction of a crosswind applied to the vehicle based on the signal received from the sensor unit, calculate a partial braking torque for compensating for a pulling caused by the crosswind based on the crosswind tendency, and calculate a compensation steering torque for compensating for a steering angle deviation based on the partial braking torque, a braking unit configured to perform partial braking of the vehicle by outputting the partial braking torque, and a steering unit configured to perform steering of the vehicle by outputting the compensation steering torque.