Patent ID: 11926437
Assignee: THE BOEING COMPANY
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 27:
28. A method comprising:
determining a rotational displacement of a shaft operatively coupled to a first differential, wherein the first differential is operatively coupled between the shaft and a first pivot associated with a first control surface, and wherein a second differential is operatively coupled between the first differential and a second pivot associated with a second control surface, the shaft operatively coupled to an input of the first differential and the first pivot operatively coupled to an output of the first differential, the output of the first differential operatively coupled to an input of the second differential and the second pivot operatively coupled to an output of the second differential;
comparing the determined rotational displacement to at least one expected rotational value; and
determining a condition of at least one of the first or second control surfaces based on the comparison.