Title page for ETD etd-3210192049721391


Type of Document Master's Thesis
Author Bail, Thomas R.
URN etd-3210192049721391
Title A Disturbance-Rejection Problem for a 2-D Airfoil Exhibiting Flutter
Degree Master of Science
Department Mathematics
Advisory Committee
Advisor Name Title
Herdman, Terry L.
Rogers, Robert C.
Burns, John A. Committee Chair
Keywords
  • LQG
  • H
  • flutter
  • singular values
Date of Defense 1997-04-21
Availability unrestricted
Abstract
Flutter suppression is a problem of

considerable interest in modern avionics. Flutter

is a vibration caused by energy in the airstream

being absorbed by a non-rigid wing. Active

control is one possible method of suppressing

flutter. However, due to unmeasurable

aerodynamic-lag states, developing an active

control using full-state feedback is not viable.

The use of a state-estimator is a more practical

way of developing active controllers. In this

paper we investigate two control methods using

state-estimators. We also use simple models of

disturbances to test attenuation and robustness

of each control method. Finally, a method of

quantitative robust analysis is reviewed and then

applied to each of the controlled systems.

Files
  Filename       Size       Approximate Download Time (Hours:Minutes:Seconds) 
 
 28.8 Modem   56K Modem   ISDN (64 Kb)   ISDN (128 Kb)   Higher-speed Access 
  etd.pdf 2.89 Mb 00:13:23 00:06:53 00:06:01 00:03:00 00:00:15

Browse All Available ETDs by ( Author | Department )

dla home
etds imagebase journals news ereserve special collections
virgnia tech home contact dla university libraries

If you have questions or technical problems, please Contact DLA.