Integrated Brake Control with Hydraulic Backup Takeover
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Solution Overview
Problem
Current autonomous driving brake systems face reliability issues due to the risk of electronic component malfunction, leading to unstable braking performance and the need for additional components, which complicates component arrangement and structure.
Innovation Solution
An integrated brake system with dual-component control, where the IDB module and RCU module work together to generate and control hydraulic pressure, allowing fluid transfer to the wheel brake, with the RCU module taking over if the IDB module malfunctions, ensuring stable braking performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a single electronic braking component is used, then the response speed and adaptability improve, but the reliability deteriorates due to higher malfunction risk
Solution Approach 1:
The braking system is divided into two independent channels: a primary electronic braking channel (IBS) and a secondary mechanical braking channel (traditional brake). Each channel can operate independently, allowing the system to maintain braking capability even if one channel fails, thus resolving the contradiction between fast electronic response and system reliability.
Solution Approach 2:
The system performs preliminary assessment of braking conditions and component states before actual braking occurs. The control unit evaluates whether to use electronic or mechanical braking based on pre-established criteria, ensuring reliable decision-making that maintains both response speed and reliability.
2Reliability
If additional braking components are added for redundancy, then the reliability improves, but the device complexity increases
Solution Approach 1:
The patent merges the electronic braking system (IBS) with the traditional mechanical braking system into a unified integrated brake system. By sharing common components such as the hydraulic medium, control unit, and fluid passages, the system achieves redundancy for improved reliability while avoiding the complexity that would result from completely separate dual systems.
Solution Approach 2:
The control unit serves multiple functions: it controls the electronic brake actuator during normal operation, monitors system status, and takes over control of the mechanical braking system when electronic braking fails. This multi-functionality reduces the need for separate dedicated components for each function, simplifying the overall system.
3Reliability
If independent power sources are provided for each braking means, then the reliability improves, but the device complexity and manufacturing cost increase
Solution Approach 1:
The system uses a single power source (vehicle battery) for both electronic and mechanical braking systems instead of providing separate power sources. The control unit intelligently manages power distribution, drawing electrical power for the electronic actuator when needed and using mechanical force from the driver's input for the mechanical brake, thereby reducing electrical connection complexity while maintaining operational reliability.
4Ease of manufacture
If miniaturization is pursued, then the manufacturing cost reduces, but the reliability may deteriorate due to component constraints
Solution Approach 1:
The electronic brake actuator is positioned within or adjacent to the traditional brake assembly, with shared hydraulic passages and control elements. This nested arrangement allows miniaturization of the overall system, reducing manufacturing costs and vehicle space requirements while maintaining the dual-channel redundancy needed for reliable braking operation.
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
The integrated brake system enhances braking reliability, allows for miniaturization, and reduces manufacturing costs while simplifying fluid connection structures, ensuring stable operation even if one component fails.
Implementation Method 1
a motor 200 that generates hydraulic pressure
Implementation Method 2
allowing fluid transfer to the wheel brake... generates a hydraulic pressure, and a fluid flows in an IDB module using the generated hydraulic pressure
Data Source
AI summary
An integrated brake system and a method of controlling the same are disclosed. According to an aspect of the present disclosure, an integrated brake system includes a remote control utility (RCU) module fluidly connected to a wheel brake coupled to a wheel; and an integrated dynamic brake (IDB) module fluidly connected to the RCU module and providing a transfer force to a fluid to be transferred to the wheel brake, the IDB module including a motor providing the transfer force to the fluid; and an IDB PCB electrically connected to the motor to control the motor, and the RCU module including an RCU PCB electrically connected to the motor to control the motor if the DDB PCB is in an inoperable state.