IP Library Granted Patent US 11,639,231
Granted Patent B2
US 11,639,231 · App. 17/855,651 · Granted May 2, 2023

Systems and methods for fault detection and control in an electric aircraft

Inventors: Nicholas Moy (Burlington, VT); Hamid-Reza Ossareh (South Burlington, VT)
Assignee: BETA AIR, LLC
B64D31/00B64D27/24B64F5/60H02P29/024B64D31/06G01L5/22
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Quick Facts
Patent No.
US 11,639,231
App. No.
17/855,651
Granted
May 2, 2023
Kind
B2
Abstract

A system for fault detection and control in an electric aircraft including an inertial measurement unit, the inertial measurement unit including at least a sensor configured to detect a torque datum associated with at least a propulsor. The system includes an observer, the observer configured to generate a torque prediction datum associated with the at least a propulsor, compare the torque prediction datum with the torque datum, and generate a residual datum as a function of the comparison. The system includes a mixer, the mixer comprising circuitry configured to generate, as a function of the residual datum, a torque priority command datum and transmit, to the at least a propulsor, the torque priority command datum.

Claims (41)

1. A system for fault detection and control in an electric aircraft, the system comprising:

a flight controller, the flight controller comprising:

at least a sensor, wherein the at least a sensor configured to detect a sensed datum associated with at least a propulsor;

an observer, the observer configured to:

generate a prediction datum associated with the at least a propulsor;

compare the prediction datum with the sensed datum;

generate a residual datum as a function of the comparison; and

determine a failure state of the at least a propulsor as a function of the residual datum;

a mixer configured to operate in a first mode in which the mixer is configured to control a first plurality of the at least a propulsor and a second mode in which the mixer is configured to control a second plurality of the at least a propulsor, the mixer comprising circuitry configured to:

generate, as a function of the residual datum and the failure state, a torque priority command datum; and

transmit, to the at least a propulsor, the torque priority command datum configured to command operation of the first plurality of the at least a propulsor.

2. The system of claim 1 , wherein sensed datum comprises a speed of the at least a propulsor.

3. The system of claim 2 , wherein the observer is further configured to calculate a torque datum as a function of the sensed datum.

4. The system of claim 3 , wherein:

the prediction datum is a torque prediction datum; and

comparing the prediction datum with the sensed datum comprises comparing the torque prediction datum to the torque datum.

5. The system of claim 1 , wherein the mixer further comprises an inertia compensator.

6. The system of claim 1 , wherein the observer is configured to compare the prediction datum and the sensed datum at regular intervals.

7. The system of claim 1 , wherein the observer is configured to indicate that the prediction datum and the sensed datum comparison is greater than a predetermined threshold.

8. The system of claim 1 , wherein the residual datum is difference between the prediction datum and the sensed datum.

9. The system of claim 1 , wherein the torque priority command datum comprises a command to increase torque to the at least a propulsor as a function of the detection of a loss of torque.

10. The system of claim 9 , wherein detection of a loss of torque further comprises detection of the loss of torque at multiple time intervals.

11. A method for fault detection and control in an electric aircraft, the method comprising:

detecting, at an at least a sensor, a sensed datum associated with at least a propulsor;

generating, at an observer, a prediction datum associated with the at least a propulsor;

comparing, at the observer, the prediction datum and the sensed datum;

generating, at the observer, as a function of the comparison, a residual datum;

generating, at the observer, as a function of the residual datum, a failure state of the at least a propulsor;

generating, at a mixer that is configured to operate in a first mode in which the mixer is configured to control a first plurality of the at least a propulsor and a second mode in which the mixer is configured to control a second plurality of the at least a propulsor, as a function of the residual datum and the failure state, a torque priority command datum; and

transmitting, to the at least a propulsor, the torque priority command datum configured to command operation of at least one flight component of the electric aircraft.

12. The method of claim 11 , wherein sensed datum comprises a speed of the at least a propulsor.

13. The method of claim 12 , further comprising, calculating, at the observer, a torque datum as a function of the sensed datum.

14. The method of claim 13 , wherein:

the prediction datum is a torque prediction datum; and

comparing the prediction datum with the sensed datum comprises comparing the torque prediction datum to the torque datum.

15. The method of claim 11 , wherein the mixer further comprises an inertia compensator.

16. The method of claim 11 , wherein comparing the prediction datum and the sensed datum comprises comparing the prediction datum and the sensed datum at regular intervals.

17. The method of claim 11 , further comprising indicating, at the observer, that the prediction datum and the sensed datum comparison is greater than a predetermined threshold.

18. The method of claim 11 , wherein the residual datum is difference between the prediction datum and the sensed datum.

19. The method of claim 11 , wherein the torque priority command datum comprises a command to increase torque to the at least a propulsor as a function of the detection of a loss of torque.

20. The method of claim 19 , wherein detection of a loss of torque further comprises detection of the loss of torque at multiple time intervals.

Continuity (2)
Continuation 17365049 · Jul 1, 2021
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