• DocumentCode
    1437648
  • Title

    Efficient DFT-based model reduction for continuous systems

  • Author

    Lilly, John H.

  • Author_Institution
    Dept. of Electr. Eng., Louisville Univ., KY, USA
  • Volume
    36
  • Issue
    10
  • fYear
    1991
  • fDate
    10/1/1991 12:00:00 AM
  • Firstpage
    1188
  • Lastpage
    1193
  • Abstract
    A method for online identification of reduced-order models (ROM) of stable continuous systems is presented. The method is unique because it utilizes the moving discrete Fourier transform (MDFT) to continuously monitor the frequency-domain profile of the plant input and output signals. These signals need not be sinusoidal, although they must be accurately represented by their DFTs. Also, the input must contain at least n frequency components (for an nth-order ROM). A computer simulation demonstrates the method
  • Keywords
    control system analysis computing; fast Fourier transforms; frequency-domain analysis; identification; signal processing; computer simulation; frequency-domain profile; moving discrete Fourier transform; online identification; reduced-order models; signal processing; stable continuous systems; Computer simulation; Computerized monitoring; Condition monitoring; Continuous time systems; Discrete Fourier transforms; Discrete transforms; Fourier transforms; Frequency estimation; Read only memory; Reduced order systems;
  • fLanguage
    English
  • Journal_Title
    Automatic Control, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9286
  • Type

    jour

  • DOI
    10.1109/9.90233
  • Filename
    90233
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1437648