Brake Component Life Estimation Using Running Clearance Detection
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Solution Overview
Problem
Existing brake components lack a reliable method to determine their usable life, including wear and fatigue, necessitating timely replacement to prevent failure.
Innovation Solution
A method using a sensor to monitor the position of the actuating lever and analyze the velocity profile during brake application and release, identifying the zero instantaneous running clearance position, which is correlated with brake component wear and fatigue, allowing adjustment to maintain desired running clearance and track the number of brake events to estimate remaining life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional wear sensors are used to monitor friction material wear, then wear indication is provided, but the system cannot determine fatigue life or total usable life of brake components
Solution Approach 1:
The sensor system is designed to perform multiple functions: monitoring both friction material wear and fatigue life of brake components. By analyzing velocity profiles from the same sensor data, the system simultaneously determines wear indicators and fatigue indicators, eliminating the need for separate monitoring systems and providing comprehensive usable life assessment.
2Measurement precision
If separate wear indicators are installed to monitor brake component condition, then wear detection is improved, but device complexity increases
Solution Approach 1:
The existing sensor that monitors brake component position is made multi-functional by implementing advanced signal processing algorithms. The same sensor data is analyzed to extract both wear indicators and fatigue indicators, eliminating the need for additional sensors and reducing overall system complexity while maintaining high measurement precision.
Solution Approach 2:
Traditional mechanical wear indicators and separate monitoring systems are replaced by using electronic sensor data combined with computational analysis. The velocity profile analysis and indicator generation are performed through processing sensor signals, substituting mechanical wear indication mechanisms with electronic detection and analysis methods.
3Productivity
If brake components are replaced based on fixed service intervals, then maintenance scheduling is simplified, but productivity is reduced due to premature replacement
Solution Approach 1:
The system continuously monitors brake component condition through sensor data and provides real-time feedback on wear and fatigue indicators. This feedback enables dynamic adjustment of maintenance schedules based on actual component condition rather than fixed intervals, allowing components to be used until their actual life limit is approached, thereby maximizing utilization and reducing premature replacement.
Solution Approach 2:
The maintenance scheduling system transitions from static fixed-interval replacement to dynamic condition-based replacement. The system continuously updates wear and fatigue indicators based on actual operating conditions and component response, enabling flexible maintenance timing that adapts to real-time component status, thus optimizing productivity while ensuring safety.
Data Source
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AI summary
A method of determining if any usable life remains in a brake component of a brake, the method comprising the steps of determining a zero instantaneous running clearance position of a brake by: - monitoring a single parameter of a brake element during use of the brake, - determining the position of the brake when the parameter has a monitored characteristic that is indicative of a zero instantaneous running clearance position by comparing the monitored characteristic of the parameter with a predetermined characteristic of the parameter which is known to be indicative of a zero instantaneous running clearance position of the brake, the method further including the steps of - using a processor to determine a total number of brake events, - using the processor to determine from the total number of brake events if any usable fatigue life remains in the brake component.