Electronic Brake Control for Closed Hydraulic Flow Paths
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Solution Overview
Problem
Existing electronic brake systems for vehicles are unable to generate a sufficient braking force if either the main or auxiliary brake devices fail, as the auxiliary brake device cannot compensate for failures in the main brake device.
Innovation Solution
The system includes a first brake device with a pressurizer that supplies hydraulic pressure to multiple wheel brakes, a second brake device connected between a wheel brake group and the first brake device, and a control unit that determines the operational status of both brake devices and adjusts the hydraulic pressure accordingly to ensure a required braking force is maintained.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the auxiliary brake device operates independently when the connecting flow path is closed, then braking force is maintained, but hydraulic pressure supply efficiency decreases
Solution Approach 1:
The control unit dynamically adjusts the operation mode of the auxiliary brake device based on real-time detection of the connecting flow path status. When the flow path is closed, the system transitions to independent auxiliary operation; when open, it returns to main brake operation. This dynamic switching optimizes hydraulic pressure supply efficiency by avoiding unnecessary auxiliary pressurizer operation when the main brake device is functional.
Solution Approach 2:
The control unit continuously monitors the state of the connecting flow path and uses this feedback information to determine whether the auxiliary brake device should operate independently or remain standby. This feedback mechanism ensures the auxiliary pressurizer operates only when necessary, maintaining braking force while minimizing energy consumption and maximizing hydraulic pressure supply efficiency.
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
This configuration allows the electronic brake system to stably generate a required braking force even if the connecting flow path between the main and auxiliary brake devices is unintentionally closed, ensuring safe vehicle operation.
Implementation Method 1
a first brake device including a first pressurizer, that is configured to supply hydraulic pressure to a plurality of wheel brakes
Implementation Method 2
determining, by the control unit, whether a connecting flow path connecting an outlet of the first pressurizer and an outlet of the second pressurizer is closed
Data Source
AI summary
An electronic brake for a vehicle and a control method therefor according to an embodiment of the present disclosure are able to stably generate a required braking force by controlling an auxiliary brake device by an auxiliary controller, if a flow path on the auxiliary brake device that connects a main brake device and a wheel brake is unintentionally closed.