On stabilizing gains for digital control systems Conference Paper uri icon

abstract

  • In this paper we develop an analytical criterion for determining the stabilizing gains of a digital control system. The criterion is based on analysis of the behavior of a real polynomial X(u) constructed from the plant transfer function G(z). It is shown that the real zeros uiof X(u)(-1, +1) and the signs of dX(u)/dt|u = u(i)determine the range of stabilizing gains K completely, and in closed form. Besides providing a nongraphical and computationally simpler alternative to the Nyquist criterion and root locus techniques, this solution is a first step towards investigating stabilizability by higher order controllers.

published proceedings

  • PROCEEDINGS OF IEEE INTERNATIONAL CONFERENCE ON INDUSTRIAL TECHNOLOGY 2000, VOLS 1 AND 2

author list (cited authors)

  • Keel, L. H., & Bhattacharyya, S. P.

complete list of authors

  • Keel, LH||Bhattacharyya, SP

publication date

  • December 2000