Dear Colleagues,

A dynamical system is called globally (absolutely) stable if it is asymptotically stable for all of the initial conditions. In this Special Issue, the global stability of nonlinear feedback standard and fractional order systems will be investigated. In general cases, the feedback systems consist of linear dynamical parts and static nonlinear elements with given nonlinear characteristics. Feedbacks can also be located in dynamical systems. The linear part can be any dynamical time-invariant or time varying system, standard or positive (state variables inputs and outputs are nonnegative), described by standard linear operators or by fractional order operators. Special attention will be devoted to fractional different orders of standard and positive descriptor linear systems as described by Caputo, Rieman–Liouville, or Grunwald–Letnikov type operators. The analyzed systems can be any of nature: mechanical, electrical, pneumatic, biological, economical, etc. Experimental and mathematical modelling results and verification of models are also welcome for this Special Issue.

Prof. Dr. Tadeusz Kaczorek
Guest Editor

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• Analysis
• Global stability
• Feedback system
• Non-linear system
• Positive system