Strong Absolute Stability of Lur’e Descriptor Systems with Impulsive Models in the Linear Subsystem

نویسندگان

  • ZHENG ZHOU
  • CHUNYU YANG
  • QINGLING ZHANG
  • Q. L. ZHANG
چکیده

Descriptor systems which are also referred to as singular systems are described by differential equations and algebraic equations [1]. It has been widely applied in the areas of power systems, economic systems, biological systems, constrained robots, electronic networking, aerospace, chemical process and astronomy (solar activity)[1-4]. Stability of descriptor systems is a basic and important problem in control theory. Stability of linear descriptor systems has been investigated widely. In [5], necessary and sufficient conditions for robust stability of descriptor interval systems are obtained by using structured singular value theory. [6] studies robust stability of impulsive-free uncertain descriptor systems. [7] is concerned with the problem of robust stability for both continuous and discrete singular delay systems, delay-dependent robust stability criteria in terms of strict linear matrix inequality (LMI) are derived. However, the research on nonlinear descriptor systems is premature because of their complex characteristics. In [8], stability problems of a composite descriptor large-scale system are studied by the generalized vector Lyapunov functions. In [9-11], under the assumption that the initial compatible conditions are known, sufficient conditions for stability of the nonlinear descriptor systems are given. [12] is concerned with the quadratic stabilization for a class of switched nonlinear singular systems. [13] gives a sufficient condition for the local stability of nonlinear descriptor systems. [14] studies the solvability and stability of a class of nonlinear descriptor systems. [15] and [16] studies the stability of Lipschitz nonlinear descriptor systems, and sufficient conditions for stability of the systems are given. Lur’e descriptor system (LDS) is a typical nonlinear descriptor system, which is a feedback system whose feed-forward is linear time-invariant system and feedback

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تاریخ انتشار 2011