Journal Name:
- International Journal of Innovation and Applied Studies
Key Words:
Author Name |
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Abstract (2. Language):
In this paper, the stability of general impulsive retarded functional differential equations with any time delay has
been considered. Many evolution processes are characterized by the fact that at certain moments of time they experience a
change of state abruptly. Consequently, it is natural to assume that these perturbations act instantaneously, that is, in the
form of impulses. Impulsive differential equations, that is, differential equations involving impulse effects, are a natural
description of observed evolution phenomena of several real world problems. Impulsive control which based on impulsive
differential equations has attracted the interest of many researchers recently. The method of Lyapunov functions and
Razumikhin technique have been widely applied to stability analysis of various delay differential equation. When Lyapunov
functions are used, it becomes necessary to choose an appropriate minimal class of functionals relative to which the
derivative of the Lyapunov function is estimated. This approach is known as the Lyapunov–Razumikhin technique. When
Lyapunov functionals are used the corresponding derivative can be estimated without demanding minimal classes of
functional. By using Lyapunov functions and analysis technique along with Razumikhin technique, some results for the
uniform stability of such impulsive differential equations have been derived. The obtained results extend and generalize
some results existing in the literature.
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