Vehicle Brake Control With Predictive ESC Enabling for Skid Risk
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Solution Overview
Problem
Existing vehicle control systems enable electronic stability control (ESC) during contact avoidance brake control (CABC) activation, leading to inconvenient driver experiences due to erroneous operations, particularly in sport driving conditions.
Innovation Solution
A vehicle control system that includes a prediction control processor to predict skid behavior during CABC and enables ESC only when a skid is predicted, using a skid prediction process and enabling process to switch ESC from disabled to enabled modes as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electronic stability control is enabled during contact avoidance brake control to secure vehicle behavior stability, then vehicle stability is improved, but driver convenience deteriorates due to erroneous operations in sport driving conditions
Solution Approach 1:
The system performs preliminary skid prediction before enabling electronic stability control during contact avoidance brake control. By predicting skid behavior in advance based on reference vehicle behavior and control values, the system only enables ESC when actually needed, avoiding erroneous operations while maintaining safety.
2Ease of operation
If electronic stability control is disabled to allow sport driving operations, then driver convenience is improved, but vehicle stability deteriorates when skid behavior occurs during contact avoidance brake control
Solution Approach 1:
The system uses feedback from skid prediction results to dynamically control the enabling state of electronic stability control. When the skid prediction indicates potential skid behavior, ESC is enabled; otherwise, it remains disabled. This feedback mechanism ensures vehicle stability is maintained only when necessary while preserving driver convenience.
3Reliability
If electronic stability control is automatically enabled during contact avoidance brake control to prevent skid behavior, then vehicle stability is improved, but system complexity increases due to additional control logic
Solution Approach 1:
The system performs preliminary skid prediction using pre-established reference vehicle behavior data and control values. This preliminary assessment simplifies the control logic by providing a clear criterion (skid prediction result) for enabling ESC, avoiding complex real-time analysis while maintaining vehicle stability.
Data Source
AI summary
A vehicle control system conducts contact avoidance brake control and electronic stability control on a vehicle using a braking unit. The vehicle control system includes one or more processors, and one or more storage media in which a program to be executed by the one or more processors is stored. The program includes one or more commands that are directed to cause the one or more processors to perform a skid prediction process and an enabling process based on a reference vehicle behavior and a control value of the contact avoidance brake control. The skid prediction process is adapted to predict whether the vehicle will exhibit a skid behavior during the contact avoidance brake control. The enabling process is adapted to enable the electronic stability control if the electronic stability control is in a disabled mode when it is predicted that the vehicle will exhibit the skid behavior.