Aircraft Brake Response Tester Using Waveform Inflection Analysis
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Solution Overview
Problem
Existing aircraft brake testing methods are susceptible to errors due to fluctuations in parameter measurements, making it difficult to accurately determine brake response times, which is crucial for safety.
Innovation Solution
A method and apparatus that involve a sensor and processor to obtain and analyze waveforms of brake engagement parameters, determining inflection points to estimate response time, and providing an indicator based on the number of inflection points within a selected time period to validate the estimate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional brake testing methods are used to measure response time, then the testing process is simple, but measurement errors occur due to parameter fluctuations
Solution Approach 1:
The system continuously monitors the waveform parameter during brake engagement and uses feedback from inflection point detection to validate whether the measured response time is accurate. The validation mechanism compares the number of inflection points against expected values to determine if the measurement is reliable, thereby improving measurement precision through iterative verification.
Solution Approach 2:
The patent introduces an intermediary validation process that acts as a mediator between the raw waveform measurement and the final response time determination. This intermediary step analyzes the waveform for inflection points and validates the measurement before accepting the response time value, reducing measurement errors without requiring complete system redesign.
2Reliability
If multiple inflection points are detected in the waveform, then measurement validation is improved, but the complexity of determining valid response time estimates increases
Solution Approach 1:
The waveform analysis is segmented into discrete inflection point detections rather than attempting to analyze the entire waveform continuously. By identifying specific inflection points and counting them, the system breaks down the complex validation process into manageable segments, improving reliability through systematic point-by-point analysis while keeping the implementation complexity reasonable.
Solution Approach 2:
The system changes the parameter being analyzed from continuous waveform amplitude to discrete inflection point occurrences. This parameter transformation converts a complex continuous signal analysis problem into a simpler counting problem, where the number of inflection points serves as a validation metric for measurement reliability.
Data Source
AI summary
A method, apparatus and computer-readable medium for measuring a determining a validity of an estimate of a response time of a brake is disclosed. A sensor obtains a waveform of a parameter related to the engagement of the brake during engagement of the brake. A processor analyzes the obtained waveform, determines inflection points in the waveform within a selected time period, validates the signal integrity of the waveform and provides an indicator when the number of determined inflection points is greater than a pre-specified count value.