Electronic Parking Brake Control for Adaptive Braking Force
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Solution Overview
Problem
Existing electronic parking brakes consume unnecessary energy due to operation without considering vehicle speed, road surface conditions, and parking situations, leading to increased fuel consumption.
Innovation Solution
An electronic parking brake system that generates braking force based on vehicle speed, road surface conditions, and parking situations, using a controller to collect relevant information and set a target braking force for efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the electronic parking brake operates based on simple EPB switch input without considering vehicle conditions, then the operation is simple and reliable, but unnecessary energy is consumed and fuel consumption increases
Solution Approach 1:
The electronic parking brake system dynamically adjusts braking force based on real-time vehicle conditions including speed, acceleration, gravity, and transmission position. The controller continuously monitors these parameters and modifies the braking force accordingly, transitioning from a static simple switch operation to a dynamic condition-based control system that optimizes energy consumption while maintaining reliability
Solution Approach 2:
The system changes the operating parameters of the electronic parking brake by collecting and analyzing multiple vehicle parameters (speed, acceleration, gravity, transmission position) and adjusting the braking force target value based on these parameters. This allows the system to operate efficiently across different driving conditions rather than using a fixed braking force
2Device complexity
If the electronic parking brake applies braking force without considering road surface conditions and parking situations, then the control is simple, but energy is wasted and fuel consumption increases
Solution Approach 1:
The controller implements a feedback mechanism by continuously collecting vehicle information including speed, acceleration, gravity, and transmission position, then using this feedback to adjust the target braking force. This closed-loop control ensures the electronic parking brake applies appropriate braking force based on actual vehicle conditions and road surface characteristics, optimizing energy efficiency
Solution Approach 2:
The system performs preliminary analysis of vehicle conditions and parking situations before applying braking force. The controller evaluates multiple parameters in advance to determine the optimal target braking force, ensuring energy-efficient operation from the outset rather than applying fixed braking force
3Adaptability or versatility
If the electronic parking brake uses fixed braking force operation, then the system is simple to control, but it cannot adapt to different driving conditions and consumes unnecessary energy
Solution Approach 1:
The system transitions from fixed braking force to dynamic adaptive braking force by continuously monitoring vehicle speed, acceleration, gravity, and transmission position. The controller adjusts the target braking force in real-time based on these dynamic parameters, enabling the system to adapt to various driving conditions including different road slopes, speeds, and transmission states
Solution Approach 2:
The electronic parking brake system achieves multi-functionality by handling multiple operating conditions through a single adaptive control framework. The controller can operate in various modes (different transmission positions, speed ranges, and gravity conditions) using the same basic system architecture, making the system universally applicable across different driving scenarios
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
Reduces unnecessary energy consumption and minimizes fuel consumption by optimizing braking force application according to specific driving conditions.
Implementation Method 1
A MoC type electronic parking brake presses the brake disc with the brake pads through the MoC screw to generate a braking force of the brake with a friction force between the brake disc and the brake pads.
Data Source
AI summary
Disclosed is an electronic parking brake system including: an electronic parking brake configured to generate a braking force in a vehicle by a motor; and a controller configured to operate or release the electronic parking brake, wherein the controller is configured to collect, according to detection of a driver's intention to park, at least one of vehicle information, surrounding environment information, or parking mode setting information of the vehicle; set a target braking force for parking the vehicle based on the at least one of the vehicle information, the surrounding environment information, or the parking mode setting information, and control a parking operation of the vehicle to generate the target braking force by operating the electronic parking brake.