A METHOD OF PROCESS IDENTIFICATION OF CERTIAN LINEAR CONTROL SYSTEMS

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ln the case of a linear-lumped control system with slowly changing performance characteristic, the process identification problem can be solved by evaluating, as functions of time, the coefficients of the polynomials that constitute the transfer function of the undetermined control system. A method of estimating these coefficients is described; and its advantages and limitations are discussed. The technique applies only to linear-lumped control systems whose zeros are known, and hence estimates only the poles of the system. The accuracy of the estimation in the presence of noise is discussed. In particular, techniques are evolved to enable choice of the fixed ... continued below

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Pages: 107

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Aronson, E.A. December 1, 1963.

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Description

ln the case of a linear-lumped control system with slowly changing performance characteristic, the process identification problem can be solved by evaluating, as functions of time, the coefficients of the polynomials that constitute the transfer function of the undetermined control system. A method of estimating these coefficients is described; and its advantages and limitations are discussed. The technique applies only to linear-lumped control systems whose zeros are known, and hence estimates only the poles of the system. The accuracy of the estimation in the presence of noise is discussed. In particular, techniques are evolved to enable choice of the fixed systems to lessen any error in the estimation due to noise. Expressions are evolved for error estimation with gaussian noise and signals. Techniques are also discussed that further lessen the errors in the estimations once the fixed systems have been chosen. Finally, a computer simulation of the estimation method is presented for a few simple cases. Conclusions drawn from the simulation indicate that the method does indeed measure the unknown parameter and yield good results for reasonable noise levels. The simulation also corroborates the error reduction techniques previously discussed. (auth)

Physical Description

Pages: 107

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  • Other Information: Orig. Receipt Date: 31-DEC-64

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  • Report No.: SC-R-742
  • Grant Number: None
  • DOI: 10.2172/4106559 | External Link
  • Office of Scientific & Technical Information Report Number: 4106559
  • Archival Resource Key: ark:/67531/metadc867260

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • December 1, 1963

Added to The UNT Digital Library

  • Sept. 16, 2016, 12:32 a.m.

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Aronson, E.A. A METHOD OF PROCESS IDENTIFICATION OF CERTIAN LINEAR CONTROL SYSTEMS, report, December 1, 1963; United States. (digital.library.unt.edu/ark:/67531/metadc867260/: accessed October 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.