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An Assessment of the Effect of Varying Popov’s Parameter on the Region of Robust Absolute Stability of Nonlinear Impulsive Control Systems with Parametric Uncertainty

  • Tseligorov Nikolai
  • Tseligorova Elena
  • Mafura GabrielEmail author
Chapter
  • 718 Downloads
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 343)

Abstract

This paper focuses on finding and the assessment of the variation of the region of robust absolute stability of an impulse control system, with monotonous nonlinearities, as Popov’s parameter varies. A mathematical model of a nonlinear impulsive control system (NICS) is considered. The criterion for absolute stability on the equilibrium position for NICS, with monotonous nonlinearities, can be expressed as a polynomial expression. The robust stability of NICS is tested using Kharitonov’s theorem and a modified root locus method for interval transfer functions. A graphical illustration of roots of the characteristic equation, which have been gotten from the interval transfer function, on the complex plane is used in the assessment of the stability of control system. To evaluate the effect of Popov’s parameter, a specially written program complex Stability is used. An illustrative example is given to demonstrate the effect of varying Popov’s parameter on the region of absolute robust stability.

Keywords

Absolute robust stability Nonlinear impulsive system Transfer function Perturbed polynomial Popov’s parameter Monotonous nonlinearity  Root locus 

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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • Tseligorov Nikolai
    • 1
  • Tseligorova Elena
    • 2
  • Mafura Gabriel
    • 3
    Email author
  1. 1.Rostov on Don’s affilliate of Russian Customs AcademyRostov on DonRussia
  2. 2.Don State Technical UniversityRostov on DonRussia
  3. 3.LLC RostovgiproshahtRostov on DonRussia

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