Brake Control Device Adaptive Pressure Distribution
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Solution Overview
Problem
Existing brake control systems face challenges in promptly detecting abnormalities in brake liquid pressure lines, particularly during collisions, which can lead to delayed detection of damage and reduced braking performance.
Innovation Solution
A brake control device that includes a pressurization unit, abnormality detection unit, and pressurization adjustment unit to manage brake liquid pressure distribution across vehicle wheels, prioritizing continuous pressure to wheels with low abnormality risk and reducing pressure to wheels with high abnormality risk until detection, enhancing collision avoidance and post-collision stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the brake liquid pressure is continuously pressurized during collision avoidance control, then the braking performance is maintained, but the detection timing of brake liquid pressure line damage is delayed
Solution Approach 1:
The patent applies dynamics by making the pressurization strategy adaptive and changeable based on real-time conditions. The system dynamically switches between continuous pressurization (for braking performance) and interrupted pressurization (for damage detection) based on the collision risk level and detected abnormality status, resolving the contradiction between maintaining braking performance and enabling timely damage detection
Solution Approach 2:
The patent changes the pressure parameter dynamically based on the operational phase. During collision avoidance control, high pressure is maintained for braking performance. When abnormality is detected or collision risk is low, the pressure is reduced or interrupted to enable damage detection. This parameter change allows the system to resolve the contradiction between maintaining braking performance and enabling timely detection
2Loss of time
If the brake liquid pressure is interrupted to detect abnormality, then the detection timing is improved, but the braking performance is degraded
Solution Approach 1:
The patent applies preliminary action by detecting abnormalities during low-risk periods (when collision avoidance control is not active) before full braking is needed. This allows the system to identify potential damage early when detection is critical, while maintaining full braking performance when actually needed during active collision avoidance control
Solution Approach 2:
The system dynamically adjusts the pressurization state based on the operational context. During active collision avoidance control, continuous pressurization maintains braking performance. During non-active periods, pressurization is interrupted to enable damage detection. This dynamic switching resolves the contradiction between detection timing and braking performance
3Force
If the pressurization is maintained during collision, then the braking force is sustained, but the abnormality detection is delayed due to gentle pressure decrease
Solution Approach 1:
The patent applies partial action by selectively pressurizing only the liquid pressure lines of wheels determined to have low abnormality occurrence risk. This allows the system to maintain sufficient braking force through normal wheels while enabling damage detection in high-risk wheels by not pressurizing them, thus resolving the contradiction between sustaining braking force and enabling accurate abnormality detection
Data Source
AI summary
A brake control device includes: a liquid pressure line provided for each vehicle wheel and supplied with a brake liquid pressure; a pressurization unit configured to supply a pressurization brake liquid pressure to the liquid pressure line; an abnormality detection unit configured to detect an abnormality of the liquid pressure line at a time the brake liquid pressure of the liquid pressure line is not greater than a threshold value; and a pressurization adjustment unit configured to continuously supply the pressurization brake liquid pressure to the liquid pressure line of the normal vehicle wheel having a low abnormality occurrence risk and suppress the supply pressure of the pressurization brake liquid pressure to the liquid pressure line of the vehicle wheel having a high abnormality occurrence risk until the abnormality of the liquid pressure line is detected by the abnormality detection unit.