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The problem of observer design for a class of nonlinear discrete-time systems with time-delay is considered. A new approach of nonlinear observer design is proposed for the class of systems. Based on differential mean value theory, the error dynamic is transformed into linear parameter variable system. By using Lyapunov stability theory and Schur complement lemma, the sufficient conditions expressed in terms of matrix inequalities are obtained to guarantee the observer error converges asymptotically...
This work deals with the reduction of a linear nonhomogeneous periodic system in differences (recurrence relations) to another linear non-homogeneous system with constant coefficients and an independent term. This makes it possible to study the existence and properties of periodic solutions, the asymptotic behavior and to obtain all solutions in closed form.
This paper focuses on the Popov generalized theory for a class of some linear systems including discrete and distributed delays. Sufficient conditions for stabilizing such systems as well as for coerciveness of an appropriate quadratic cost are developed. The obtained results are applied for the design of a memoryless state feedback control law which guarantees the (exponential) closed-loop stability with an norm bound constraint on disturbance attenuation. Note that the proposed results extend...
A Lur’e feedback control system consisting of a linear, infinite-dimensional system of boundary control in factor form and a nonlinear static sector type controller is considered. A criterion of absolute strong asymptotic stability of the null equilibrium is obtained using a quadratic form Lyapunov functional. The construction of such a functional is reduced to solving a Lur’e system of equations. A sufficient strict circle criterion of solvability of the latter is found, which is based on results...
A Lur'e feedback control system consisting of a linear, infinite-dimensional
system of boundary control in factor form and a nonlinear static sector type
controller is considered. A criterion of absolute strong asymptotic stability of
the null equilibrium is obtained using a quadratic form Lyapunov functional.
The construction of such a functional is reduced to solving a Lur'e system of
equations. A sufficient strict circle criterion of solvability of the latter is found,
which is based on...
Let be a general control system; the existence of a smooth control-Lyapunov function does not imply the existence of a continuous stabilizing feedback. However, we show that it allows us to design a stabilizing feedback in the Krasovskii (or Filippov) sense. Moreover, we recall a definition of a control-Lyapunov function in the case of a nonsmooth function; it is based on Clarke’s generalized gradient. Finally, with an inedite proof we prove that the existence of this type of control-Lyapunov...
Let be a general control system; the existence of a
smooth control-Lyapunov function does not imply the existence of a continuous
stabilizing feedback. However, we show that it allows us to design a
stabilizing feedback in the Krasovskii (or Filippov) sense. Moreover,
we recall a definition of a control-Lyapunov function
in the case of a nonsmooth function; it is based on Clarke's
generalized gradient. Finally, with an inedite proof we prove that the existence of this type of control-Lyapunov...
We construct explicitly an homogeneous feedback for a class of single input, two dimensional and homogeneous systems.
We construct explicitly an homogeneous feedback for a class of
single input, two dimensional and homogeneous systems.
In this paper, we generalize Artstein’s theorem and we derive sufficient conditions for stabilization of single-input homogeneous systems by means of an homogeneous feedback law and we treat an application for a bilinear system.
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