DocumentCode :
2578421
Title :
Disturbance gain and bandwidth margins: definitions and application to autopilot design
Author :
Davison, D.E. ; Kabamba, P.T. ; Meerkov, S.M.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA
Volume :
2
fYear :
1997
fDate :
4-6 Jun 1997
Firstpage :
1109
Abstract :
Deals with the notion of disturbance model uncertainty. The disturbance is modeled as the output of a first-order filter which is driven by white noise and whose bandwidth, ωb, and H 2-norm, K, are uncertain. An analytical expression for the steady-state output variance as a function of ωb and K is derived. Several properties of this variance function are given and the notions of disturbance gain margin and disturbance bandwidth margin are introduced. These tools are then applied to the analysis of an altitude hold autopilot system in the presence of turbulence with uncertain turbulence scale
Keywords :
aircraft control; atmospheric turbulence; closed loop systems; control system analysis; feedback; robust control; transfer functions; uncertain systems; white noise; H2-norm; altitude hold autopilot system; autopilot design; disturbance bandwidth margin; disturbance gain margin; disturbance model uncertainty; first-order filter; steady-state output variance; turbulence; variance function; white noise; Analysis of variance; Application software; Bandwidth; Filters; Power measurement; Robust control; Robustness; Steady-state; Transfer functions; White noise;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
American Control Conference, 1997. Proceedings of the 1997
Conference_Location :
Albuquerque, NM
ISSN :
0743-1619
Print_ISBN :
0-7803-3832-4
Type :
conf
DOI :
10.1109/ACC.1997.609704
Filename :
609704
Link To Document :
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