
Accession Number : AD0777222
Title : Considerations Related to IllPosed and WellPosed Problems in System Identification.
Descriptive Note : Scientific interim rept.,
Corporate Author : AEROSPACE RESEARCH LABS WRIGHTPATTERSON AFB OHIO
Personal Author(s) : Audley,David R. ; Lee,David A.
Report Date : DEC 1973
Pagination or Media Count : 81
Abstract : The authors introduce a class of input/output representations (which are called lambdarepresentations) for linear, timeinvariant systems. For many cases of practical interest the identification of one of these representations is mathematically wellposed. Its determination is thus relatively insensitive to certain experimental uncertainties and rational errorinidentification bounds may be found. Impulse response identification almost always leads to an illposed problem, so lambdarepresentation is often an attractive alternate nonparametric model for physical systems which must be identified from input/output records. Among the practical considerations investigated in this report are the effect of input and output uncertainties (noise) in the identification experiment, and the treatment of the case when only discrete data are available. (Modified author abstract)
Descriptors : *Control theory, *Identification systems, Banach space, Integral equations, Numerical integration, Signal processing, Uncertainty, Statistical analysis
Subject Categories : Statistics and Probability
Distribution Statement : APPROVED FOR PUBLIC RELEASE