Vehicle Brake Force Backup Control Under Main Regulator Failure
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Solution Overview
Problem
Existing vehicle braking systems face instability and safety issues when the main braking force regulator fails, leading to excessive wheel slip and impaired driving stability due to uneven distribution of braking force between hydraulic and non-hydraulic braking devices.
Innovation Solution
A braking system that integrates a hydraulic braking apparatus, a non-hydraulic electronically controlled braking apparatus, and a regenerative braking controller, with an auxiliary braking force regulator that adjusts braking force distribution based on the status of the anti-lock braking system (ABS) and determines failures in the main regulator, using electronically controlled and regenerative braking to stabilize braking force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the main braking force regulator fails, then the vehicle cannot drive normally, but the auxiliary braking force regulator alone cannot provide stable braking force distribution
Solution Approach 1:
The braking system is divided into multiple independent braking apparatuses (first hydraulic braking apparatus, second hydraulic braking apparatus, and non-hydraulic braking apparatus) that can operate independently or in combination. This segmentation allows the system to maintain functionality even when the main braking force regulator fails, as the auxiliary regulator can control at least one braking apparatus to provide stable braking force distribution.
2Adaptability or versatility
If the auxiliary braking force regulator controls only a portion of hydraulic braking devices, then it can operate when the main regulator fails, but excessive wheel slip occurs and vehicle stability is harmed
Solution Approach 1:
The auxiliary braking force regulator dynamically adjusts braking force distribution by controlling at least one braking apparatus based on whether ABS is operating. The system can flexibly switch between controlling only hydraulic braking devices or combining them with non-hydraulic braking devices, adapting to different failure scenarios and operating conditions to maintain vehicle stability.
3Power
If braking force is generated in wheels with uncontrolled hydraulic braking devices, then additional braking force is available, but the braking system cannot distribute braking force stably
Solution Approach 1:
The auxiliary braking force regulator uses feedback from ABS operation status to intelligently control the braking apparatuses. By monitoring whether ABS is operating, the regulator can determine the optimal braking force distribution strategy, ensuring stable braking force allocation across all wheels while maintaining sufficient total braking power.
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
Stabilizes braking force distribution and ensures safe driving by compensating for failures in the main braking force regulator, preventing excessive wheel slip and maintaining vehicle stability through combined use of hydraulic, electronically controlled, and regenerative braking.
Implementation Method 1
a regenerative braking controller configured for performing regenerative braking by controlling a driving motor of the vehicle
Implementation Method 2
an electronically controlled braking apparatus configured for operating electrically to generate braking force
Implementation Method 3
a first hydraulic braking apparatus provided on one of front and rear wheels of a vehicle and a second hydraulic braking apparatus provided on another of the front and rear wheels of the vehicle
Data Source
AI summary
A braking system, may include: a hydraulic braking apparatus including a first hydraulic braking apparatus provided on anyone of front and rear wheels of a vehicle and a second hydraulic braking apparatus provided on the other of the front and rear wheels of the vehicle; a non-hydraulic braking apparatus capable of generating braking force in a wheel provided with the second hydraulic braking apparatus among the front and rear wheels; a main braking force regulator configured for controlling hydraulic braking pressure supplied to the first hydraulic braking apparatus and the second hydraulic braking apparatus; and an auxiliary braking force regulator configured for controlling at least one braking apparatus of the first hydraulic braking apparatus and the non-hydraulic braking apparatus, based on whether an anti-lock braking system (ABS) is operating, when a failure has occurred in the main braking force regulator.