Electro-Mechanical Brake Timing for Front-First Fail-Safe Braking
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Solution Overview
Problem
Electro-mechanical braking systems face issues with vehicle control and safety when the motor fails, leading to out-of-control actions like drifting and tail throwing due to improper sequencing of braking the front and rear wheels.
Innovation Solution
An electronic mechanical braking apparatus with a time delay mechanism that prioritizes braking the front wheels before the rear wheels when the motor fails, using a pedal braking force to ensure controlled braking sequences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electro-mechanical braking system uses pedal braking force when the motor cannot work, then the vehicle can be braked, but the vehicle is prone to out-of-control actions such as drifting and tail throwing
Solution Approach 1:
The patent applies preliminary action by first braking the front wheels before the rear wheels through a time delay mechanism. When the pedal braking force is applied, the front braking apparatus activates immediately while the rear braking apparatus is delayed, ensuring the front wheels are secured first to maintain vehicle control and prevent out-of-control actions during the braking process.
2Ease of operation
If the rear wheels are braked simultaneously with or before the front wheels, then the braking force is distributed evenly, but out-of-control actions such as tail throwing and drifting occur
Solution Approach 1:
The patent implements preliminary action by establishing a specific sequence where front wheel braking occurs before rear wheel braking. The time delay apparatus ensures that when pedal braking force is applied, the front braking apparatus is activated first, and only after a delay period does the rear braking apparatus activate, preventing simultaneous or premature rear wheel braking that causes tail throwing and drifting.
Solution Approach 2:
The patent applies dynamics by making the braking force distribution time-dependent rather than static. The system dynamically adjusts the braking force application timing based on the braking sequence requirement, using the time delay apparatus to create a dynamic temporal difference between front and rear wheel braking activation, adapting to the vehicle's stability requirements during braking.
Data Source
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AI summary
The invention relates to an electronic mechanical braking apparatus (100) and a vehicle (200). The electronic mechanical braking apparatus at least includes one time delay apparatus (10) and two braking apparatuses (20), one braking apparatus is configured to brake front wheels (220) of the vehicle, and the other braking apparatus is configured to brake rear wheels (230) of the vehicle, and an operation mode of the electronic mechanical braking apparatus includes a primary braking mode and a secondary braking mode; when the electronic mechanical braking apparatus operates in the primary braking mode, the two braking apparatuses are separately configured to receive a motor braking force output by a braking motor; and when the electronic mechanical braking apparatus operates in the secondary braking mode, the time delay apparatus is configured to: receive a pedal braking force output by a pedal mechanism of the vehicle, first transmit the braking force to the one braking apparatus, and then transmit the braking force to the other braking apparatus. In a vehicle equipped with the electronic mechanical braking apparatus according to the claimed invention out-of-control actions such as drifting and tail throwing can be avoided, thereby improving driving safety of the vehicle.