Accession Number : AD0475631

Title :   ADAPTIVE CONTROL REVIEW. VOL. II. LIMITS ON THE IDENTIFICATION TIME FOR LINEAR SYSTEMS.

Descriptive Note : Final technical rept.,

Corporate Author : PURDUE UNIV LAFAYETTE IN SCHOOL OF ELECTRICAL ENGINEERING

Personal Author(s) : Cooper, G. R. ; Lindenlaub, J. C.

Report Date : SEP 1965

Pagination or Media Count : 114

Abstract : This work on adaptive control considers the problem of determining the time that is necessary to estimate the impulse response of a linear system with a specified variance. The results show that, when the external disturbance is Gaussian and white, and the output signal energy is large compared to the power spectral density of the noise, the identification time is proportional to the power spectral density of the noise, and inversely proportional to the variance of the estimate and the mean square value of the input test signal. It is also concluded that, when the noise is white and the test signal is optimized, no measurement technique will yield a smaller identification time than that of the ideal identifier. (Author)

Descriptors :   *IDENTIFICATION SYSTEMS), (*LINEAR SYSTEMS, (*ADAPTIVE CONTROL SYSTEMS), MATCHED FILTERS, NOISE(RADIO), CORRELATION TECHNIQUES, FEEDBACK, NARROWBAND, SIGNALS, MATHEMATICAL PREDICTION.

Subject Categories : Cybernetics

Distribution Statement : APPROVED FOR PUBLIC RELEASE