Practical model reduction for flexible structuresThe most accepted methods for developing models of flexible structures for the analysis, design and simulation of control systems are finite element methods and extraction from experimental data. Using either of these methods, models are often produced with modes that do not significantly add to the fidelity of the model. This paper presents techniques for eliminating these modes. Particular attention is paid to multiple-input, multiple-output systems. First, control system models developed for flexible structures, using finite element methods and experimental data, are briefly discussed. the shortcomings of using models with unnecessary and/or residual modes are delineated. Then, two techniques for reducing the order of models are presented; the first is applicable to single-input, single-output systems and the second for multiple-input, multiple-output systems. Finally, both are illustrated using model data from the proposed NASA Shuttle-C.
Document ID
19910042185
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Mitchell, Jerrel R. (Ohio Univ. Athens, OH, United States)
Irwin, R. Dennis (Ohio Univ. Athens, OH, United States)
Huston, Genevieve A. (Ohio University Athens, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1990
Subject Category
Cybernetics
Report/Patent Number
AAS PAPER 90-016
Meeting Information
Meeting: Annual Rocky Mountain Guidance and Control Conference