Electric Aircraft Motor Warning Levels by Rotor Role
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Solution Overview
Problem
Existing electric aircraft systems lack an effective abnormality warning system that provides appropriate warning levels for motor system abnormalities, potentially leading to safety risks or inconvenience due to inadequate or inappropriate warnings during flight.
Innovation Solution
An abnormality warning system that includes an abnormality determination unit and a warning level setting unit, which assesses motor system abnormalities based on rotor position and function, providing specific warning levels to address the urgency of the issue, such as enabling continued flight, shortening the flight plan, or requiring an emergency landing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a simple abnormality detection system is used, then the device complexity is reduced, but the reliability of abnormality warning is insufficient because it cannot provide appropriate warning levels for different motor system abnormalities
Solution Approach 1:
The abnormality warning system segments the warning process into multiple levels (first warning level for non-critical abnormalities, second warning level for critical abnormalities). The determination unit divides abnormality assessment into different categories based on rotor position and function, allowing targeted warning responses rather than a single generic warning system.
Solution Approach 2:
The system applies local quality by providing different warning levels for different motor systems based on their specific roles. Critical motor systems (e.g., main lifting rotors) trigger a second warning level, while non-critical systems trigger a first warning level. This localized approach ensures appropriate warning intensity matches the actual risk.
2Reliability
If high warning levels are set for all motor abnormalities, then flight safety is improved, but convenience deteriorates due to unnecessary emergency landings for minor issues
Solution Approach 1:
The warning system segments abnormalities into different categories with corresponding warning levels. Non-critical abnormalities (e.g., minor sensor deviations) receive a first warning level allowing continued flight, while critical abnormalities (e.g., motor failure in main lifting rotor) receive a second warning level requiring emergency landing. This segmentation prevents unnecessary emergency landings for minor issues.
Solution Approach 2:
The system applies different warning intensities locally based on the specific motor system and abnormality type. By evaluating rotor position, function, and abnormality severity, the system provides tailored warning responses that maintain flight convenience for minor issues while ensuring safety for critical problems.
3Ease of operation
If low warning levels are set for motor abnormalities, then flight convenience is maintained, but safety risks increase due to inadequate warnings for critical issues
Solution Approach 1:
The system segments warning responses into multiple levels to simultaneously address convenience and safety. The first warning level maintains convenience for non-critical abnormalities, while the second warning level ensures safety for critical abnormalities. This multi-level segmentation allows the system to respond appropriately to each situation.
Solution Approach 2:
The determination unit applies local quality by assessing each motor system's criticality based on rotor position and function. Critical systems receive higher warning levels to ensure safety, while non-critical systems receive lower warning levels to maintain convenience. This localized assessment resolves the contradiction between safety and convenience.
4Measurement precision
If detailed abnormality assessment based on rotor position and function is implemented, then warning accuracy is improved, but device complexity increases due to additional sensors and processing requirements
Solution Approach 1:
The determination unit segments the abnormality assessment process into distinct evaluation criteria ( rotor position, rotor function, abnormality type). By dividing the assessment into these segments, the system achieves high detection precision using existing sensor data without requiring a completely new complex detection infrastructure.
Solution Approach 2:
The determination unit serves multiple functions: it identifies abnormal motors, classifies abnormality severity, determines rotor position criticality, and selects appropriate warning levels. This multi-functionality allows detailed abnormality assessment using a single integrated unit rather than multiple separate complex systems.
Data Source
AI summary
An abnormality warning system provides an abnormality warning for multiple motor systems that drive a motor used correspondingly to each of multiple rotors included in an electric aircraft. The abnormality warning system includes an abnormality determination unit and a warning level setting unit. The abnormality determination unit determines an abnormal one of the motor systems. The warning level setting unit sets a warning level to warn abnormality, based on at least position information of the rotor in the electric aircraft or the usage of the rotor corresponding to a motor system determined to be abnormal by the abnormality determination unit.