Methods and apparatus for providing servo torque control with load compensation for pilot in the loop
First Claim
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1. A method for operating a mechanical flight control system, the method comprising:
- providing a torque command to a servo torque control loop, wherein the servo torque control loop comprises at least one position control servo;
receiving at least one feedback signal from the position control servo, during operation of the position control servo;
detecting user external load disturbance input to the servo torque control loop, based on the at least one feedback signal;
adjusting operation of the position control servo, based on the detected user external load disturbance input;
determining whether the user external load disturbance input indicates a first increase in acceleration of the position control servo in combination with a second increase in velocity of the position control servo; and
determining that a user has provided input to the servo torque control loop, based on the indicated first increase and the indicated second increase.
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Abstract
A method for operating a mechanical flight control system is provided. The method provides a torque command to a servo torque control loop, wherein the servo torque control loop comprises at least one position control servo; receives at least one feedback signal from the position control servo, during operation of the position control servo; detects user external load disturbance input to the servo torque control loop, based on the at least one feedback signal; and adjusts operation of the position control servo, based on the detected user external load disturbance input.
7 Citations
15 Claims
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1. A method for operating a mechanical flight control system, the method comprising:
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providing a torque command to a servo torque control loop, wherein the servo torque control loop comprises at least one position control servo; receiving at least one feedback signal from the position control servo, during operation of the position control servo; detecting user external load disturbance input to the servo torque control loop, based on the at least one feedback signal; adjusting operation of the position control servo, based on the detected user external load disturbance input; determining whether the user external load disturbance input indicates a first increase in acceleration of the position control servo in combination with a second increase in velocity of the position control servo; and determining that a user has provided input to the servo torque control loop, based on the indicated first increase and the indicated second increase. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for operating a servo torque control loop of an aircraft, the system comprising:
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a processor; a flight envelope protection (FEP) module, executed by the processor, configured to provide a set of FEP limits for the operation of the aircraft, wherein the servo torque control loop comprises at least one position control servo; a feedback analysis module, executed by the processor, configured to receive and analyze a feedback signal from the position control servo during operation of the position control servo; and a servo control module, executed by the processor, configured to operate the position control servo in the aircraft within the set of FEP limits provided by the FEP module, and to adjust operation of the position control servo based on analysis of the feedback analysis module; wherein the feedback analysis module is further configured to; identify a programmed acceleration and a programmed velocity for the position control servo; determine an actual acceleration and an actual velocity for the position control servo; calculate a first difference between the programmed acceleration and the actual acceleration, and a second difference between the programmed velocity and the actual velocity; compare the first calculated difference to a first predetermined threshold value, and the second calculated difference to a second predetermined threshold value; and when the first calculated difference is greater than the first predetermined threshold, and the second calculated difference is greater than the second predetermined threshold, determine that a user has provided external load disturbance input to the servo torque control loop. - View Dependent Claims (9, 10, 11, 12)
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13. A non-transitory, computer-readable medium containing instructions thereon, which, when executed by a processor, perform a method comprising:
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analyzing a feedback signal from a position control servo of a servo torque control loop of an aircraft to determine whether a user has provided external load disturbance input to the servo torque control loop, wherein the feedback signal is analyzed during operation of the position control servo; adjusting operation of the position control servo, based on user external load disturbance input indicated by the feedback signal; and identifying an actual acceleration value of the position control servo and an actual velocity value of the position control servo, wherein the actual acceleration value comprises a first larger value than a programmed acceleration value of the position control servo, and wherein the actual velocity value comprises a second larger value than a programmed velocity value of the position control servo; wherein a condition of the first larger value and the second larger value indicates the indicated user input. - View Dependent Claims (14, 15)
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Specification