Aircraft Sensor Simulation Calibration
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Solution Overview
Problem
Current aircraft sensor map models suffer from inaccuracies, leading to 2-5% errors during steady-state operations and twice as much during transient operations, which are significant challenges in aviation.
Innovation Solution
An engine controller is configured to calibrate sensor map models using actual sensor data to produce calibration values, which are then saved as a calibration curve. These calibration values are used to correct inaccuracies in the map models, improving their accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sensor map models are used to replace or backup aircraft sensors, then system reliability is improved, but measurement precision deteriorates due to 2-5% errors during steady-state operations and twice as much during transient operations
Solution Approach 1:
The system performs preliminary calibration during steady-state operations to establish accurate calibration curves before transient operations occur. The calibration data is pre-computed and stored, then applied during transient operations to correct the inherent 2-5% errors, thereby improving measurement precision without sacrificing reliability
Solution Approach 2:
The system continuously compares simulated sensor outputs from the map model with actual sensor measurements during steady-state operations. This feedback loop generates calibration values that are used to adjust the map model parameters, reducing measurement errors and improving precision while maintaining the reliability benefits of having redundant sensor systems
Data Source
AI summary
A control system may generate a first simulated value for an aircraft sensor by applying one or more first input parameters to a sensor map model via a processor. The control system may compare the first simulated value and the first output of the aircraft sensor to determine a first calibration value and save calibration data in a memory based on the first calibration value. The control system may generate a calibrated simulation value of the aircraft sensor based on the sensor map model and the calibration data. The control system may determine validity of a second output of the aircraft sensor, utilize the second output of the aircraft sensor to perform an operation of the aircraft when the second output of the aircraft sensor is valid, and utilize the calibrated simulation value to perform the operation of the aircraft when the second output of the aircraft sensor is invalid.