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1997 | Buch

Dynamic Impulse Systems

Theory and Applications

verfasst von: S. T. Zavalishchin, A. N. Sesekin

Verlag: Springer Netherlands

Buchreihe : Mathematics and Its Applications

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Über dieses Buch

A number of optimization problems of the mechanics of space flight and the motion of walking robots and manipulators, and of quantum physics, eco­ momics and biology, have an irregular structure: classical variational proce­ dures do not formally make it possible to find optimal controls that, as we explain, have an impulse character. This and other well-known facts lead to the necessity for constructing dynamical models using the concept of a gener­ alized function (Schwartz distribution). The problem ofthe systematization of such models is very important. In particular, the problem of the construction of the general form of linear and nonlinear operator equations in distributions is timely. Another problem is related to the proper determination of solutions of equations that have nonlinear operations over generalized functions in their description. It is well-known that "the value of a distribution at a point" has no meaning. As a result the problem to construct the concept of stability for generalized processes arises. Finally, optimization problems for dynamic systems in distributions need finding optimality conditions. This book contains results that we have obtained in the above-mentioned directions. The aim of the book is to provide for electrical and mechanical engineers or mathematicians working in applications, a general and systematic treat­ ment of dynamic systems based on up-to-date mathematical methods and to demonstrate the power of these methods in solving dynamics of systems and applied control problems.

Inhaltsverzeichnis

Frontmatter
Chapter 1. Elements of the Theory of Schwartz Distributions
Abstract
In this Chapter for the convenience of the reader we present some basic facts of the theory of Schwartz distributions (see [92, 30, 104] for more details).
S. T. Zavalishchin, A. N. Sesekin
Chapter 2. Equations in Distributions: new approaches
Abstract
In this Chapter an attempt to develop a new theory of equations in distributions on the basic of the works [119, 120, 122, 123, 125, 84] is presented. Three sets of problems are of interest to us.
S. T. Zavalishchin, A. N. Sesekin
Chapter 3. Applications to Problems of Dynamics and Control
Abstract
There are two approaches to the problem to bound solutions of linear differential equations by means of methods of functional analysis. The first one has been developed by J. I. Massera and J. J. Schäffer [63] and is based on Banach’s about inverse—transform theorem. This theorem is applied to maps establishing a correspondence between solutions with vanishing Cauchy data and additive perturbations. Another approach has been introduced by R.Bellman and makes use of Banach—Steinhaus’ lemma [11]. This lemma is applied to “input—output” operators. A remarkable feature of the second approach is its ability to deal with arbitrary integral maps [110, 116].
S. T. Zavalishchin, A. N. Sesekin
Chapter 4. Applied Control Problems
Abstract
This Section is devoted to the study of several optimization problems with a engineering—physics interpretation. From the control theory point of view these problems are singular. The approach given in Chapter 3 enables us to formulate such problems as mathematical ones and solve these.
S. T. Zavalishchin, A. N. Sesekin
Chapter 5. Discontinuous Solutions to Ordinary Nonlinear Differential Equations in the Space of Functions of Bounded Variation
Abstract
In this chapter we continue studying differential equations with generalized right—hand sides, which was started in Section 2.6, but here we deal with distributions to be distributional derivatives of functions of bounded variation. We concern a definition of solutions to ordinary differential equations in the space of functions of bounded variation. We define discontinuous solutions by means of closing the absolutely continuous solutions set. It is shown that solutions defined in such a way satisfy some integral inclusion. The case in which such an inclusion turns into an integral equation is considered. A Cauchy formula for the discontinuous solutions to bilinear systems is obtained. Discontinuous solutions to neutral type nonlinear differential equations are discussed. In particular, we obtain a generalization of Gronwall—Bellman’s lemma for the space of functions of bounded variation.
S. T. Zavalishchin, A. N. Sesekin
Chapter 6. Properties of Attainability Sets for Dynamic Systems with Discontinuous Trajectories
Abstract
The attainability set for a dynamic system with impulsive integrally bounded control is shown to be compact and continuously dependent on the parameters and a control resource. Although such a set may consist of discontinuous trajectories, it turns out to be continuous as a multivalued mapping defined on [t 0, ϑ]. The connectedness property for attainability sets is proven. Some methods to determine such sets are presented. For a particular class of bilinear systems, the number of control impulses needed for the system to pass to a given point of the attainability set is estimated. Similar problems for dynamic systems with absolutely continuous trajectories has been studied in [25, 14, 108].
S. T. Zavalishchin, A. N. Sesekin
Backmatter
Metadaten
Titel
Dynamic Impulse Systems
verfasst von
S. T. Zavalishchin
A. N. Sesekin
Copyright-Jahr
1997
Verlag
Springer Netherlands
Electronic ISBN
978-94-015-8893-5
Print ISBN
978-90-481-4790-8
DOI
https://doi.org/10.1007/978-94-015-8893-5