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A Framework for Optimal Control Allocation with Structural Load ConstraintsConventional aircraft generally employ mixing algorithms or lookup tables to determine control surface deflections needed to achieve moments commanded by the flight control system. Control allocation is the problem of converting desired moments into control effector commands. Next generation aircraft may have many multipurpose, redundant control surfaces, adding considerable complexity to the control allocation problem. These issues can be addressed with optimal control allocation. Most optimal control allocation algorithms have control surface position and rate constraints. However, these constraints are insufficient to ensure that the aircraft's structural load limits will not be exceeded by commanded surface deflections. In this paper, a framework is proposed to enable a flight control system with optimal control allocation to incorporate real-time structural load feedback and structural load constraints. A proof of concept simulation that demonstrates the framework in a simulation of a generic transport aircraft is presented.
Document ID
20110011787
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Frost, Susan A. (NASA Ames Research Center Moffett Field, CA, United States)
Taylor, Brian R. (NASA Dryden Flight Research Center Edwards, CA, United States)
Jutte, Christine V. (NASA Dryden Flight Research Center Edwards, CA, United States)
Burken, John J. (NASA Dryden Flight Research Center Edwards, CA, United States)
Trinh, Khanh V. (SGT, Inc. Moffett Field, CA, United States)
Bodson, Marc (Utah Univ. Salt Lake City, UT, United States)
Date Acquired
August 25, 2013
Publication Date
August 2, 2010
Subject Category
Aircraft Stability And Control
Report/Patent Number
ARC-E-DAA-TN1503
Meeting Information
Meeting: AIAA Atmospheric Flight Mechanics Conference
Location: Toronto, Ontario
Country: Canada
Start Date: August 2, 2010
End Date: August 5, 2010
Sponsors: American Inst. of Aeronautics and Astronautics
Funding Number(s)
CONTRACT_GRANT: NNA08CG83C
WBS: WBS 561581.02.08.01.17.14.02
Distribution Limits
Public
Copyright
Public Use Permitted.

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