Aircraft Piloting Device with Radially Offset Hall Sensors
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing aircraft piloting devices with radially offset magnetic-field-sensitive elements face distortions in angular component measurements, requiring complex software compensation, which can lead to errors and failures, especially in off-axis mountings.
Innovation Solution
A device with a contactless angular position sensor featuring a stator and rotor assembly, where magnetic-field-sensitive elements are radially offset but compensated using electronic means, such as varying current intensity, to directly provide accurate angle measurements without software processing, ensuring reliability and precision similar to centered elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If magnetic-field-sensitive elements are mounted radially offset in relation to the axis of rotation, then the device structure is simplified and easier to manufacture, but measurement precision deteriorates due to distortions in angular component measurements
Solution Approach 1:
The patent applies parameter changes by varying the intensity of polarization current supplied to different detecting cells based on their angular position. The supply unit modifies the current intensity parameter to compensate for the radial offset, ensuring that each detecting cell receives an appropriate current level that accounts for its position relative to the rotation axis, thereby maintaining measurement precision despite the simplified off-axis mounting structure
Solution Approach 2:
The patent implements feedback through the supply unit that receives angular position information and automatically adjusts the polarization current intensity accordingly. This feedback mechanism ensures that the current supplied to each detecting cell is optimized based on its angular position, compensating for the effects of radial offset and maintaining accurate angular component measurements without requiring complex software processing
2Measurement precision
If software compensation is used to correct distortions from radially offset mounting, then measurement precision is maintained, but device complexity increases and reliability decreases due to software errors and failures
Solution Approach 1:
The patent replaces the software-based compensation system with a hardware-based electronic compensation system. The supply unit, which is part of the physical sensor assembly, directly adjusts the polarization current intensity based on angular position, eliminating the need for software processing. This substitution of electronic hardware for software improves reliability by removing the source of software errors and failures while maintaining measurement precision
Solution Approach 2:
The sensor system performs self-compensation through the supply unit that automatically adjusts polarization current intensity based on the angular position of the magnetic field. This self-service mechanism eliminates the need for external software compensation, allowing the system to correct for radial offset effects autonomously and improving overall system reliability by removing dependent software components
3Measurement precision
If software processing is implemented to compensate for radial offset, then angular position accuracy is maintained, but processing time increases and productivity decreases
Solution Approach 1:
The patent applies preliminary action by pre-configuring the supply unit with the capability to adjust polarization current intensity based on angular position. The compensation is performed in advance through hardware circuitry rather than through post-processing software, allowing the system to directly output accurate angular position measurements without requiring additional processing time, thereby maintaining both precision and productivity
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
The solution provides improved reliability, precision, and operational safety by eliminating the need for software compensation, allowing for faster calibration and better functional performance with reduced bulk and increased resistance to failures.
Implementation Method 1
a magnetic structure suitable for generating a magnetic field
Implementation Method 2
a plurality of electrodes spaced at regular intervals in a ring on the ring-shaped well; and means for selectively applying a progressive succession of different polarization currents to the electrodes in order to deliver a succession of Hall effect induced voltages, representing different successive components of the magnetic field in the plane of the detector
Data Source
AI summary
The invention relates to a device for piloting an aircraft, having at least one piloting member which is movable about at least one axis of rotation equipped with at least one contactless angular position sensor including a stator assembly and a rotor assembly which are movable in relation to one another about an axis of rotation, at least one magnetic-field-sensitive element which is radially offset in relation to the axis of rotation, interlinked on one of the assemblies and placed opposite the magnetic structure interlinked on the other of the assemblies, and comprises:a plurality of Hall effect detecting cells,a supply and measuring circuitry which is configured for selecting, for each detecting cell supplied with power, a predetermined value of a compensation coefficient Gk depending on the position in relation to the axis of rotation of this powered detecting cell, and for applying this compensation coefficient value Gk by modifying at least one intensity and/or voltage signal, such that errors caused by the radial offset are corrected.