Longitudinal and vertical gust feed forward compensation using lateral control surfaces
AssigneeThe Boeing Company
InventorsBrian K. Rupnik, Sean J. Flannigan
Life of this patent
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Abstract
In one embodiment of a method to reduce vertical position errors of an aircraft, a disturbance input acting on the aircraft may be determined. The magnitude of the disturbance may be converted into a delta lift command if the magnitude of the disturbance is outside a criteria. The delta lift command may be post processed. The delta lift command may be converted into symmetric lateral surface position commands for control surfaces. The symmetric lateral surface position commands may be communicated to lateral control surface actuators to move the control surfaces according to the symmetric lateral surface position commands.
Claims22
A method for reducing a vertical position error of an aircraft comprising:
- determining a disturbance acting on the aircraft;
- determining whether a magnitude of the disturbance exceeds a criteria;
- converting the magnitude of the disturbance into a delta lift command, defined as a change in lift command, if the magnitude of the disturbance is outside the criteria;
- post processing the delta lift command;
- converting the delta lift command into symmetric lateral surface position commands for control surfaces;
- and
- communicating the symmetric lateral surface position commands to lateral control surface actuators to move the control surfaces according to the symmetric lateral surface position commands.
A system for reducing a vertical position error of an aircraft comprising:
- an aircraft sensor for determining a disturbance acting on an aircraft;
- control surfaces of the aircraft;
- lateral control surface actuators of the aircraft for moving the control surfaces;
- and
- a computer, a flight control system, or an autopilot system comprising a non-transient computer readable medium storing instructions which:
- determine whether a magnitude of the disturbance exceeds a criteria;
- convert the magnitude of the disturbance into a delta lift command, defined as a change in lift command, if the magnitude of the disturbance is outside the criteria;
- post process the delta lift command;
- convert the delta lift command into symmetric lateral surface position commands for the control surfaces;
- and communicate the symmetric lateral surface position commands to the lateral control surface actuators to move the control surfaces according to the symmetric lateral surface position commands.
Dependencies are inferred from the claim text.