Erik Mosekilde

Zhanybai T Zhusubaliyev

' Technical problems often lead to differential equations with piecewise-smooth right-hand sides. Problems in mechanical engineering, for instance, violate the requirements of smoothness if they involve collisions, finite clearances, or stick-slip phenomena. Systems of this type can display a large variety of complicated bifurcation scenarios that still lack a detailed description. This book presents some of the fascinating new phenomena that one can observe in piecewise-smooth dynamical systems. The practical significance of these phenomena is demonstrated through a series of well-documented and realistic applications to switching power converters, relay systems, and different types of pulse-width modulated control systems. Other examples are derived from mechanical engineering, digital electronics, and economic business-cycle theory. The topics considered in the book include abrupt transitions associated with modified period-doubling, saddle-node and Hopf bifurcations, the interplay between classical bifurcations and border-collision bifurcations, truncated bifurcation scenarios, period-tripling and -quadrupling bifurcations, multiple-choice bifurcations, new types of direct transitions to chaos, and torus destruction in nonsmooth systems. In spite of its orientation towards engineering problems, the book addresses theoretical and numerical problems in sufficient detail to be of interest to nonlinear scientists in general. Contents:On the Dynamics of Nonlinear SystemsBasic Concepts and MethodsRelay Control SystemsBifurcations and Chaotic Oscillations in Relay SystemsChaotic Oscillations in Pulse-Width Modulated SystemsBorder-Collision Bifurcations on a Two-Dimensional TorusBorder-Collision Bifurcations in a Management System Readership: Graduate students and researchers in nonlinear science and chaos theory; electrical and electronic engineers; experts in control theory and in applied mathematics. Keywords:Chaos;Bifurcations;Border-Collision Bifurcations;Piecewise-Smooth Dynamical Systems;Relay Control Systems;Pulse-Width Modulated Control Systems;Power Converters;Human Decision-Making BehaviorReviews:“This book is an important guide for engineers and all scientists working with non-smooth models.”Mathematical Reviews “The book contains interesting examples of piecewise-smooth dynamical systems and its bifurcation phenomena with direct applications … it will certainly be a useful tool for many scientists and engineers.”Zentralblatt MATH '

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