Rotor-Aware Motor Abnormality Warning Levels for Electric Aircraft
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Solution Overview
Problem
Existing electric aircraft systems lack appropriate abnormality warning mechanisms that can differentiate between critical and non-critical motor system failures, leading to potential safety risks or unnecessary disruptions during flight.
Innovation Solution
An abnormality warning system that determines the type and severity of motor system failures by analyzing phase current and torque current values, and sets warning levels based on rotor position and function, providing distinct alerts for emergency, flight plan adjustment, or continued operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an abnormality warning system is implemented to detect motor system abnormalities, then flight safety is improved, but device complexity increases due to additional determination and warning level setting units
Solution Approach 1:
The abnormality warning system is segmented into distinct functional units: an abnormality determination unit that detects motor system abnormalities, and a warning level setting unit that categorizes severity. This segmentation allows the system to maintain high reliability through specialized detection while managing complexity by organizing functions into modular, independent components with clear interfaces.
Solution Approach 2:
The system performs preliminary abnormality detection and warning level classification before critical failures occur. By continuously monitoring motor system parameters and pre-establishing warning levels based on rotor position and function, the system prepares safety responses in advance, improving flight safety without requiring complex real-time decision-making during critical events.
2Measurement precision
If warning levels are set based on detailed rotor position and function assessment, then warning accuracy is improved, but measurement and detection difficulty increases
Solution Approach 1:
The warning level setting unit applies local quality assessment by evaluating rotor position and function-specific parameters rather than treating all motor abnormalities uniformly. Different warning levels are assigned based on the specific rotor's position and functional importance, enabling precise warning accuracy while simplifying detection through localized, context-aware measurements rather than comprehensive system-wide analysis.
Solution Approach 2:
The system changes parameters by transforming raw sensor data about rotor position and motor function into standardized warning level categories. This parameter transformation simplifies detection by converting complex multi-dimensional measurements into discrete, actionable warning levels that are easier to interpret and respond to, maintaining high warning accuracy while reducing detection complexity.
3Ease of operation
If the system provides specific warning levels for different abnormality severities, then ease of operation is improved, but information processing requirements increase
Solution Approach 1:
The warning level setting unit dynamically adjusts warning levels based on real-time rotor position and motor function assessment. This dynamic adaptation provides operationally clear warnings that reflect current system state while efficiently processing information by only analyzing necessary parameters ( rotor position and function) rather than all possible motor data, balancing ease of operation with manageable information processing requirements.
Solution Approach 2:
The system extracts only the essential information needed for warning level determination—specifically rotor position and motor function data—from the complete set of motor system parameters. This extraction approach improves ease of operation by providing focused, actionable warning levels while reducing information processing load by ignoring irrelevant data, maintaining operational clarity without overwhelming processing requirements.
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.