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Meeting	ACGS Committee Meeting 112 - Annapolis, Maryland - October 2013
Agenda Location	8 SUBCOMMITTEE D – DYNAMICS, COMPUTATIONS, AND ANALYSIS 8.1 Emergency Flight Control with Almost No Dynamic Modeling and Totally Unknown Control surface Faults
Title	Emergency Flight Control with Almost No Dynamic Modeling and Totally Unknown Control surface Faults
Presenter	Dennis Bernstein
Affiliation	University of Michigan
Available Downloads*	presentation
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Abstract	The goal of this work is to control aircraft under minimal modeling information. The approach taken is based on retrospective cost adaptive control (RCAC), which uses retrospective optimization to learn from past data. RCAC is easily implementable using standard least squares techniques, and requires extremely limited modeling information, namely, components of the impulse response. We apply RCAC to an extreme case of flight control, namely, control in the presence of totally unknown control-surface faults, such as a stuck rudder or severe rate saturation. Simulation results are based on the NASA GTM model. Additional examples are taken from missile control, noise and vibration control, and control of spacecraft with CMGs.