Brake Control Apparatus Using Speed-Based Auxiliary Braking
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Solution Overview
Problem
Conventional brake systems fail to secure adequate braking force when the braking device is in an abnormal state, such as during hydraulic pressure supply failures or when the braking pressure differs from the normal state, potentially compromising vehicle safety, especially at varying speeds.
Innovation Solution
A brake control apparatus and method that selectively control engine, motor, and parking brake control modules based on vehicle speed to provide auxiliary braking force when the primary braking device is abnormal, using a controller to transmit coordination control commands and prioritize control modules according to speed and braking pressure conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the conventional brake system operates in fallback mode when the braking device is abnormal, then the system can secure basic braking in emergency situations, but the braking force is insufficient and compromises vehicle safety
Solution Approach 1:
The patent applies multi-functionality by enabling multiple control modules (engine control module, motor control module, parking brake control module) to perform braking functions. When the primary braking device is abnormal, the controller selectively activates alternative control modules based on vehicle speed to provide auxiliary braking force, ensuring the braking system can fulfill its safety function through multiple pathways.
Solution Approach 2:
The patent changes the operational parameters by selecting different control modules based on vehicle speed thresholds. The controller compares current vehicle speed with reference speeds and dynamically switches between controlling the engine control module/motor control module (for higher speeds) and the parking brake control module (for lower speeds), optimizing braking performance across different operating conditions.
2Reliability
If the controller selects control modules based on vehicle speed to provide auxiliary braking force, then braking performance is improved in abnormal states, but the control system complexity increases
Solution Approach 1:
The patent implements dynamics by making the control system adaptive to changing vehicle conditions. The controller dynamically selects which control module to activate based on real-time vehicle speed comparisons with reference speeds. This dynamic selection strategy allows the system to optimize braking performance for different speed ranges without requiring a completely complex reconfiguration, as the selection logic follows clear speed-based thresholds.
Data Source
AI summary
A brake control apparatus according to an embodiment of the present disclosure includes a braking device configured to generate a braking pressure based on a hydraulic pressure to provide a main braking force to a vehicle; and a controller configured to control at least one control module selected based on the speed of the vehicle among a plurality of control modules including an engine control module (EMS) of the vehicle, a motor control module and a parking brake control module to provide an auxiliary braking force to the vehicle when the braking device is in an abnormal state.