Vehicle Control Apparatus Evasive Handling Coordination
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Solution Overview
Problem
Conventional electronic stability control (ESC) systems face limitations in improving acceleration and braking performance while maintaining vehicle stability during emergency steering avoidance states, and they do not effectively alleviate driver anxiety related to current wheel pressure.
Innovation Solution
A vehicle control apparatus and method that includes an input unit for receiving handle operation and vehicle behavior information, a determination unit to identify emergency steering avoidance states, and a control unit that coordinates the evasive handling control (EHC) and ESC systems to apply targeted wheel pressure for braking, prioritizing outer or rear wheels based on predetermined conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional ESC system applies braking force to control vehicle posture, then vehicle stability is improved, but acceleration performance and braking performance are worsened due to delayed response in emergency steering avoidance states
Solution Approach 1:
The EHC system performs preliminary braking action on the outer wheel before the conventional ESC system activates. When emergency steering avoidance is detected, the EHC system applies braking force to the outer wheel in advance, reducing the response delay and improving both vehicle stability and braking performance during emergency maneuvers
Solution Approach 2:
The braking control function is segmented into two systems: EHC for emergency steering avoidance with priority on outer wheel braking, and ESC for general stability control. This segmentation allows each system to optimize its performance for specific conditions, resolving the contradiction between stability and performance
2Stability of the object's composition
If conventional ESC system controls vehicle posture using steering information and behavior information, then vehicle stability is maintained, but the system cannot effectively address driver anxiety about current wheel pressure during braking
Solution Approach 1:
The system provides feedback to the driver about the current wheel pressure state during braking operations. By informing the driver of the actual braking force applied to each wheel, the system reduces driver anxiety and improves confidence in the vehicle's braking performance while maintaining stability control
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enhances acceleration and braking performance while ensuring vehicle stability and reduces driver anxiety by applying precise braking pressure through the EHC system, outperforming conventional methods in vehicle trajectory control and braking efficiency.
Implementation Method 1
the EHC system applies pressure to wheels in advance ahead of the ESC system to perform a braking operation according to a target wheel pressure value
Data Source
AI summary
Disclosed herein are a vehicle control apparatus and a method for controlling a vehicle using the same. The vehicle control apparatus according to an embodiment of the present invention includes an input unit that receives handle operation information detected by a sensing device, receives avoidance steering information of a driver, and receives behavior information of a vehicle, a determination unit that determines whether the vehicle is in an emergency steering avoidance state based on the received handle operation information, the received avoidance steering information of the driver, and the received behavior information of the vehicle, and a control unit that controls an evasive handling control (EHC) system and an electronic stability control (ESC) system such that the EHC system presses wheels in advance ahead of the ESC system to perform a braking operation according to a target wheel pressure value, when the vehicle is in the emergency steering avoidance state.