Electric Parking Brake Control for Changing Vehicle Inclination
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Solution Overview
Problem
Existing parking brake systems fail to dynamically adjust braking levels in response to changes in vehicle inclination during transport or parking, particularly when vehicles are parked on trailers that tilt, risking inadequate immobilization.
Innovation Solution
A control unit in the braking system adjusts parking brake intensity based on driver input or anticipated changes in vehicle inclination, using a first and second request to apply braking forces of varying intensities, optionally with satellite navigation and external data integration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the parking brake level is permanently set based on initial parking inclination, then the control system is simple and reliable, but the system cannot adapt to changes in vehicle inclination during parking
Solution Approach 1:
The parking brake control system transitions from a static, permanently set braking level to a dynamic system that can adjust the braking level in response to changing vehicle inclination. The control unit receives successive requests and modifies the braking level accordingly, making the system adaptable to varying parking conditions such as tilting trailers or boats on water.
Solution Approach 2:
The system changes the braking level parameter based on detected inclination changes. When the control unit receives a second request indicating changed parking conditions, it modifies the braking level from the initial value to a new value that accounts for the changed inclination, ensuring continued effective vehicle immobilization.
2Reliability
If the parking brake provides fixed immobilization force, then the system is simple to operate, but it becomes unsafe when vehicle inclination changes after parking
Solution Approach 1:
The control system incorporates feedback mechanisms where the control unit monitors parking conditions and receives requests about inclination changes. Based on this feedback, the system adjusts the braking level to maintain reliable vehicle immobilization even when external conditions change, such as when a boat moves on water or a trailer tilts.
Solution Approach 2:
The system allows for preliminary adjustment of braking levels before inclination changes fully affect the vehicle. When the control unit receives a request about potential inclination changes, it proactively adjusts the braking level to prevent insufficient immobilization, rather than waiting for the vehicle to actually move.
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
Enables adaptive braking force adjustment to ensure effective immobilization of vehicles in varying parking conditions, enhancing safety and reliability.
Implementation Method 1
the parking brake is actuated by pressing a button which sends a signal to the control unit which activates electric motors
Data Source
AI summary
A motor vehicle braking system including at least one electrically actuated parking brake (FP) to be positioned at a wheel, a control unit (UC) configured for generating a command for the parking brake (FP) to apply parking braking or to interrupt the application of parking braking at a first intensity following a first request, wherein the control unit (UC) is also configured for generating a command for the parking brake (FP) to apply parking braking at a second intensity in response to a second request issued after the first request.