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Stabilisation and Motion Control of Unstable Objects

Author : Alexander M. Formalskii

Publisher : Walter de Gruyter GmbH & Co KG

Page : 281 pages

File Size : 29,47 MB

Release : 2015-11-13

Category : Science

ISBN : 3110392828

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Book Description

Systems with mechanical degrees of freedom containing unstable objects are analysed in this monograph and algorithms for their control are developed, discussed, and numerically tested. This is achieved by identifying unstable modes of motion and using all available resources to suppress them. By using this approach the region of states from which a stable regime can be reached is maximised. The systems discussed in this book are models for pendula and vehicles and find applications in mechatronics, robotics as well as in mechanical and automotive engineering.



Optimal Structural Design

Author : Nikolay V. Banichuk

Publisher : Walter de Gruyter GmbH & Co KG

Page : 223 pages

File Size : 37,48 MB

Release : 2017-09-11

Category : Mathematics

ISBN : 3110530902

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Book Description

This monograph studies optimization problems for rigid punches in elastic media and for high-speed penetration of rigid strikers into deformed elastoplastic, concrete, and composite media using variational calculations, tools from functional analysis, and stochastic and min-max (guaranteed) optimization approaches with incomplete data. The book presents analytical and numerical results developed by the authors during the last ten years.



13th Chaotic Modeling and Simulation International Conference

Author : Christos H. Skiadas

Publisher : Springer Nature

Page : 1080 pages

File Size : 14,23 MB

Release : 2021-12-14

Category : Mathematics

ISBN : 3030707954

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Book Description

Gathering the proceedings of the 13th CHAOS2020 International Conference, this book highlights recent developments in nonlinear, dynamical and complex systems. The conference was intended to provide an essential forum for Scientists and Engineers to exchange ideas, methods, and techniques in the field of Nonlinear Dynamics, Chaos, Fractals and their applications in General Science and the Engineering Sciences. The respective chapters address key methods, empirical data and computer techniques, as well as major theoretical advances in the applied nonlinear field. Beyond showcasing the state of the art, the book will help academic and industrial researchers alike apply chaotic theory in their studies.



Group Theory of Chemical Elements

Author : Abram I. Fet

Publisher : Walter de Gruyter GmbH & Co KG

Page : 225 pages

File Size : 30,7 MB

Release : 2016-09-12

Category : Science

ISBN : 3110475200

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Book Description

In this monograph, group-theoretical approaches are used to build a system of hadrons and qualitatively describe the properties of chemical compounds. This serves as a complement to numerically and approximately solve the many-electron Schrödinger equation, in order to understand the behavior of chemical elements. Besides general theory, specific results are compared with experimentally measured chemical properties.



Parton Densities in Quantum Chromodynamics

Author : Igor Olegovich Cherednikov

Publisher : Walter de Gruyter GmbH & Co KG

Page : 226 pages

File Size : 49,17 MB

Release : 2016-11-21

Category : Science

ISBN : 3110430606

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Book Description

The purpose of this book is to give a systematic pedagogical exposition of the quantitative analysis of Wilson lines and gauge-invariant correlation functions in quantum chromodynamics. Using techniques from the previous volume (Wilson Lines in Quantum Field Theory, 2014), an ab initio methodology is developed and practical tools for its implementation are presented. Emphasis is put on the implications of gauge invariance and path-dependence properties of transverse-momentum dependent parton density functions. The latter are associated with the QCD factorization approach to semi-inclusive hadronic processes, studied at currently operating and planned experimental facilities. Contents: Introduction Particle Number Operators in Quantum Mechanics and in Quantum Field Theory Geometry of Quantum Field Theories Basics of Wilson Lines in QCD Gauge-Invariant Parton Densities Simplifying Wilson Line Calculations Brief Literature Guide Conventions and Reference Formulae Integrations Bibliography Index



Nonlinear Dynamics

Author : Alexander B. Borisov

Publisher : Walter de Gruyter GmbH & Co KG

Page : 300 pages

File Size : 42,63 MB

Release : 2016-11-21

Category : Science

ISBN : 3110430584

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Book Description

The book provides a concise and rigor introduction to the fundamentals of methods for solving the principal problems of modern non-linear dynamics. This monograph covers the basic issues of the theory of integrable systems and the theory of dynamical chaos both in nonintegrable conservative and in dissipative systems. A distinguishing feature of the material exposition is to add some comments, historical information, brief biographies and portraits of the researchers who made the most significant contribution to science. This allows one to present the material as accessible and attractive to students to acquire indepth scientific knowledge of nonlinear mechanics, feel the atmosphere where those or other important discoveries were made. The book can be used as a textbook for advanced undergraduate and graduate students majoring in high-tech industries and high technology (the science based on high technology) to help them to develop lateral thinking in early stages of training. Contents: Nonlinear Oscillations Integrable Systems Stability of Motion and Structural Stability Chaos in Conservative Systems Chaos and Fractal Attractors in Dissipative Systems Conclusion References Index



Noncompact Semisimple Lie Algebras and Groups

Author : Vladimir K. Dobrev

Publisher : Walter de Gruyter GmbH & Co KG

Page : 422 pages

File Size : 10,20 MB

Release : 2016-09-12

Category : Mathematics

ISBN : 3110427648

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Book Description

With applications in quantum field theory, elementary particle physics and general relativity, this two-volume work studies invariance of differential operators under Lie algebras, quantum groups, superalgebras including infinite-dimensional cases, Schrödinger algebras, applications to holography. This first volume covers the general aspects of Lie algebras and group theory supplemented by many concrete examples for a great variety of noncompact semisimple Lie algebras and groups. Contents: Introduction Lie Algebras and Groups Real Semisimple Lie Algebras Invariant Differential Operators Case of the Anti-de Sitter Group Conformal Case in 4D Kazhdan–Lusztig Polynomials, Subsingular Vectors, and Conditionally Invariant Equations Invariant Differential Operators for Noncompact Lie Algebras Parabolically Related to Conformal Lie Algebras Multilinear Invariant Differential Operators from New Generalized Verma Modules Bibliography Author Index Subject Index



Quantum Groups

Author : Vladimir K. Dobrev

Publisher : Walter de Gruyter GmbH & Co KG

Page : 450 pages

File Size : 37,55 MB

Release : 2017-07-10

Category : Science

ISBN : 3110427788

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Book Description

With applications in quantum field theory, general relativity and elementary particle physics, this three-volume work studies the invariance of differential operators under Lie algebras, quantum groups and superalgebras. This second volume covers quantum groups in their two main manifestations: quantum algebras and matrix quantum groups. The exposition covers both the general aspects of these and a great variety of concrete explicitly presented examples. The invariant q-difference operators are introduced mainly using representations of quantum algebras on their dual matrix quantum groups as carrier spaces. This is the first book that covers the title matter applied to quantum groups. Contents Quantum Groups and Quantum Algebras Highest-Weight Modules over Quantum Algebras Positive-Energy Representations of Noncompact Quantum Algebras Duality for Quantum Groups Invariant q-Difference Operators Invariant q-Difference Operators Related to GLq(n) q-Maxwell Equations Hierarchies



Dynamics and Advanced Motion Control of Off-Road UGVs

Author : Yue Ma

Publisher : Academic Press

Page : 361 pages

File Size : 11,69 MB

Release : 2020-08-06

Category : Technology & Engineering

ISBN : 0128188006

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Book Description

Dynamics and Advanced Motion Control of Unmanned Ground Off-Road Vehicles details both theoretical concepts such as planning and perception when working with UGVs, as well as more practical, hands-on aspects such as torque vectoring control. The book also covers related technologies such as intelligent and electrification of ground vehicles. After an introduction, initial chapters include an exploration of wheel-soil and track-soil interaction mechanisms, motion stability, motion control, fault detection and identification, and fault tolerance control. This book offers readers a detailed understanding of Unmanned Ground Vehicles by combining theory, applications and further developments. Topics are covered in such a way that readers will be well versed on the current field of UGVs and will be able to implement future design and research in a feasible and effective way. - Gives a comprehensive analysis and introduction to the dynamics and advanced motion control of unmanned ground off-road vehicles - Covers key related technology concepts, such as intelligent and electrification of ground vehicles - Details the entire control framework of off-road UGVs and the implementation of controller design



Advances in Mechanical Engineering

Author : Alexander N. Evgrafov

Publisher : Springer Nature

Page : 223 pages

File Size : 13,80 MB

Release : 2023-04-21

Category : Technology & Engineering

ISBN : 3031300270

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Book Description

This book draws together the most interesting recent results to emerge in mechanical engineering in Russia, providing a fascinating overview of the state of the art in the field in that country which will be of interest to a wide readership. A broad range of topics and issues in modern engineering is discussed, including dynamics of machines, materials engineering, structural strength and tribological behavior, transport technologies, machinery quality and innovations. The book comprises selected papers presented at the 11th conference “Modern Engineering: Science and Education”, held at the Saint Petersburg State Polytechnic University in June 2022 with the support of the Russian Engineering Union. The authors are experts in various fields of engineering, and all of the papers have been carefully reviewed. The book is of interest to mechanical engineers, lecturers in engineering disciplines and engineering graduates.