eVTOL Flight Control Torque Prioritization Under Limit Constraints
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Solution Overview
Problem
The technology of electric vertical take-off and landing (eVTOL) aircraft is lacking in crucial areas of control, complicating the development of manned and unmanned flight.
Innovation Solution
A system and method for flight control in electric aircraft that includes a flight controller providing an initial vehicle torque signal, a mixer receiving and adjusting this signal based on vehicle torque limits and prioritization data to generate modified attitude commands, and a display presenting the remaining vehicle torque and output torque command.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the flight controller provides multiple attitude commands simultaneously, then the control responsiveness is improved, but the torque allocation becomes complex and may exceed vehicle torque limits
Solution Approach 1:
The mixer segments the multiple attitude commands by assigning priority levels to different command types (e.g., pitch, roll, yaw commands). This segmentation allows the system to process and allocate torque to commands in a structured sequence, managing complexity while maintaining responsiveness.
Solution Approach 2:
The system dynamically adjusts torque allocation based on real-time conditions, vehicle torque limits, and command priorities. The mixer continuously recalculates modified attitude commands to ensure torque demands remain within limits while responding to changing flight conditions and pilot inputs.
2Reliability
If the system adjusts torque commands to adhere to vehicle torque limits, then the reliability is improved, but the control precision may be reduced
Solution Approach 1:
The mixer implements feedback by continuously monitoring the relationship between requested torque commands and vehicle torque limits. When limits are approached or exceeded, the system provides feedback to modify attitude commands, ensuring reliable operation while minimizing precision loss through intelligent adjustment.
Solution Approach 2:
The system changes control parameters by generating modified attitude commands that adjust torque demands to fit within vehicle limits. This parameter transformation maintains the essential control intent while adapting to physical constraints, preserving precision within the feasible operating range.
3Ease of operation
If the mixer generates modified attitude commands based on prioritization data, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The system performs preliminary action by pre-establishing priority relationships between different attitude commands before torque allocation occurs. This preliminary structuring of command priorities simplifies the mixing process, as the hierarchy is predetermined and does not require complex real-time decision-making about which commands to execute.
Data Source
AI summary
A system for flight control in electric aircraft includes a flight controller configured to provide an initial vehicle torque signal including a plurality of attitude commands. The system includes a mixer configured to receive the initial vehicle torque signal and a vehicle torque limit, receive prioritization data including a prioritization datum corresponding to each of the plurality of attitude command, determine a plurality of modified attitude commands as a function of the vehicle torque limit, the attitude commands, and the prioritization data, generate, as a function of modified attitude commands, an output torque command including the initial vehicle torque signal adjusted as a function of the vehicle torque limit, generate, as a function of the output torque command, a remaining vehicle torque. The system includes a display, wherein the display is configured to present, to a user, the remaining vehicle torque and the output torque command.