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Model reduction by weighted Component Cost AnalysisComponent Cost Analysis considers any given system driven by a white noise process as an interconnection of different components, and assigns a metric called 'component cost' to each component. These component costs measure the contribution of each component to a predefined quadratic cost function. A reduced-order model of the given system may be obtained by deleting those components that have the smallest component costs. The theory of Component Cost Analysis is extended to include finite-bandwidth colored noises. The results also apply when actuators have dynamics of their own. Closed-form analytical expressions of component costs are also derived for a mechanical system described by its modal data. This is very useful to compute the modal costs of very high order systems. A numerical example for MINIMAST system is presented.
Document ID
19900039737
Document Type
Conference Paper
Authors
Kim, Jae H. (Purdue Univ. West Lafayette, IN, United States)
Skelton, Robert E. (Purdue University West Lafayette, IN, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1990
Subject Category
SYSTEMS ANALYSIS
Report/Patent Number
AIAA PAPER 90-1207
Meeting Information
AIAA Dynamics Specialists Conference(Long Beach, Ca)
Funding Number(s)
CONTRACT_GRANT: NAG1-958
Distribution Limits
Public
Copyright
Other