Stability of Time-Variant Discrete-Time Systems

ISBN-13: 9783528089115 / Niemiecki / Miękka / 1985 / 148 str.

Gunter Ludyk; Geunter Ludyk;Gunter Ludyk

Opis

In this monograph some stability properties of linear, time-variant, discrete-time systems are summarized, where some properties are well known, some are little-known facts, and a few may be new. Models for this treatise an the asymp totical behaviour of solutions of difference equations are the commonly known excellent books of CESARI 3] and CONTI 5]. In the tables of Chapter 1 the definitions and the essen tial statements an stability of discrete-time systems are summarized, such that Chapter 2 to 5 may be regarded as explaining appendices for these tables. I am grateful to Paul Ludyk, who typed and corrected the manuscript with great skill and patience, and Alois Ludyk, who drew the figures with great artistic skill. Gunter Ludyk Bremen, January 1985 Contents Notations 1 1. Introduction and Summary 4 2. Mathematical Description of Discrete-Time Systems 16 2. 1 State Equations 16 2. 2 Properties of the Transition Matrix 19 2. 3 LAGRANGE-Identity and GREEN's Formula for Difference Equations 20 2. 4 Estimations for the Norm of the Transition Matrix 21 3. Stability of Free Discrete-Time Systems 34 3. 1 LJAPUNOW- and LAGRANGE-Stability 34 3. 2 Short Time Boundedness 40 3. 3 UniformStability 45 3. 4 Asymptotic Stability 63 3. 5 P-stability 70 3. 6 Exponential and Uniform Asymptotic Stability 75 3. 7 Relations between the Stability Glasses 84 4. Stability of Forced Discrete-Time Systems 86 4. 1 Preliminary Results 86 4. 2 Input-State Stability 93 4.

Spis treści

1.Introduction and Summary.- 2.Mathematical Description of Discrete-Time Systems.- 3.Stability of Free Discrete-Time Systems.- 4.Stability of Forced Discrete-Time Systems.- 5.Relations between Internal and External Stability.- References.

O autorze

Günter Ludyk (after receiving his PhD in 1967) habilitated and has been appointed Scientific Advisor and Professor (associate professor) of the Technical University of Berlin in 1970. In 1971 he has been a visiting professor at the Technical University of Graz/Austrial. Since 1972 he is a Full Professor at the Physics/Electrical Engineering Faculty of the University of Bremen. His area of research includes the theory of dynamical systems and the application of interval mathematics to generate high-precision results. He published various books on these topics both in German and English.