Aircraft FMU Configuration Detection for Adaptive Control Currents
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current fuel regulation systems in aircraft turbomachines require manual software modifications for different FMU models during maintenance, which can lead to either damage from excessive control currents or inadequate protection during malfunctions due to insufficient currents.
Innovation Solution
A method to automatically detect the hardware configuration of FMUs by analyzing current responses and electrical characteristics during startup, allowing for adaptive control current adjustments without human intervention, ensuring proper protection and operation across heterogeneous configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual software modification is performed for different FMU models, then the control system can be adapted to specific hardware configurations, but the maintenance complexity and time consumption increase
Solution Approach 1:
The protection computer automatically detects the FMU model by measuring its electrical characteristics (inductance, resistance, time constants) during startup and self-configures the control parameters without requiring manual software modification. This self-service approach eliminates the need for maintenance personnel to manually adapt software for different FMU models.
Solution Approach 2:
The system dynamically changes control parameters (control current limits, response thresholds) based on the detected FMU model parameters. The protection computer stores multiple sets of parameters corresponding to different FMU models and automatically selects the appropriate set based on the detected electrical characteristics, enabling adaptability without manual intervention.
2Manufacturing precision
If manual software modification is required for FMU model changes, then control accuracy can be maintained, but productivity during maintenance operations decreases
Solution Approach 1:
The system performs preliminary detection of FMU electrical characteristics during the startup phase before normal operation begins. By detecting and configuring the appropriate control parameters in advance, the system ensures control accuracy is established before the maintenance operation completes, eliminating the need for post-installation software modification.
Solution Approach 2:
The protection computer automatically detects the FMU model and configures control parameters without requiring maintenance personnel to manually modify software, thereby maintaining control accuracy while significantly reducing maintenance time and improving productivity.
3Reliability
If high control current is used for all FMU models, then the system ensures adequate response for high inductance devices, but low inductance devices may be damaged
Solution Approach 1:
The system changes the control current parameters based on the detected FMU inductance characteristics. For high inductance FMUs, higher control currents are permitted to ensure adequate response, while for low inductance FMUs, the control current is limited to prevent damage. This dynamic parameter adjustment ensures both reliability and safety across different FMU models.
Solution Approach 2:
The system applies different control current limits tailored to each specific FMU model's electrical characteristics. Instead of using a uniform control current for all FMUs, the protection computer configures model-specific parameters that match the electrical properties of each detected FMU, preventing both damage and ensuring adequate response.
4Object-affected harmful factors
If low control current is used for all FMU models, then equipment safety is maintained, but high inductance devices may not respond adequately during malfunctions
Solution Approach 1:
The system dynamically adjusts control current parameters based on the detected FMU inductance. For high inductance FMUs, the protection computer permits higher control currents to ensure adequate response during malfunctions, while for low inductance FMUs, lower currents are used to maintain safety. This ensures protection function effectiveness for all FMU models.
5Productivity
If FMU model replacement is performed during maintenance, then equipment availability is improved, but the risk of incorrect configuration increases
Solution Approach 1:
The protection computer automatically detects the replaced FMU model by measuring its electrical characteristics during startup and self-configures the control parameters. This eliminates the risk of incorrect manual configuration while maintaining equipment availability, as the system handles the entire detection and configuration process automatically without requiring manual intervention.
Solution Approach 2:
The system uses feedback from electrical characteristic measurements (inductance, resistance, time constants) to automatically determine the FMU model and configure appropriate parameters. This closed-loop approach ensures configuration accuracy by continuously verifying the actual FMU characteristics and adjusting parameters accordingly, eliminating guesswork and manual errors.
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 method enables automatic adaptation of control currents to match the specific FMU model, preventing damage and ensuring effective protection against turbomachine malfunctions, while simplifying maintenance operations and reducing the need for software modifications.
Implementation Method 1
The invention is applicable to any equipment comprising an electric actuator comprising a winding, and therefore having an inductance
Data Source
Figure 1~2
Figure 3
Figure 4A~5B
AI summary
The invention relates to a method for detecting a hardware configuration of a piece of equipment located on-board an aircraft, which is able to receive, as input, a setpoint current (lc), and to produce, as output, a response current (I), the method comprising the steps: a) sending by way of input to the piece of equipment a setpoint current (I c ) at a given initial time (t0); b) measuring one or more values of the response current (I) output from the piece of equipment in a measurement time interval defined between two times (t 1 , t 2 ) subsequent to the initial time (t0); c) deducing the hardware configuration of the piece of equipment, from said one or more values of the measured response current (I).