Now showing items 1-5 of 5

  • Determination of all stabilizing fractional-order PID controllers that satisfy a weighted sensitivity constraint 

    Lee, Yung K.; Watkins, John Michael (IEEE, 2012)
    This paper presents a method for determining all stabilizing fractional-order (FO) proportional-integral-derivative (PID) controllers that satisfy an H∞ weighted-sensitivity constraint for a system of integer or non-integer ...
  • Identification of nonlinear systems in frequency domain 

    Shanmugam, K. Sam; Jong, Mark T. (IEEE, 1975-11-01)
    A frequency domain technique for identifying a class of nonlinear systems is presented. The class of nonlinear systems we consider in this paper consists of a power series nonlinearity sandwiched between two linear systems ...
  • On Schwarz canonical form for large system simplification 

    Lal, M.; Mitra, R.; Jain, A. (IEEE, 1975-04-01)
    Recently a new technique for the reduction of a large-order dynamical system, using Schwarz canonical form, has been proposed [1]. It is presently shown that the above is essentially a frequency domain technique for which ...
  • An optimal frequency domain filter for edge detection in digital pictures 

    Shanmugam, K. Sam; Dickey, Fred M.; Green, James A. (IEEE, 1979-01-01)
    Edge detection and enhancement are widely used in image processing applications. In this paper we consider the problem of optimizing spatial frequency domain filters for detecting edges in digital pictures. The filter is ...
  • Two-dimensional zoom FFT 

    Stork, R.; Hoyer, E.A. (IEEE, 1978-04-01)
    The concept of the zoom FFT (a more efficient algorithm which allows zooming in on a narrow segment of the spectrum while preserving its frequency content) is extended to the two-dimensional case. The technique is further ...