Nonlinear Control Systems 2004

Nonlinear Control Systems 2004 PDF Author: Frank Allgower
Publisher: Elsevier
ISBN: 9780080443034
Category : Science
Languages : en
Pages : 524

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Book Description

Nonlinear Control Systems 2004

Nonlinear Control Systems 2004 PDF Author: Frank Allgower
Publisher: Elsevier
ISBN: 9780080443034
Category : Science
Languages : en
Pages : 524

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Book Description


Coupled Electromagnetic Field/Circuit Simulation. Modeling and Numerical Analysis

Coupled Electromagnetic Field/Circuit Simulation. Modeling and Numerical Analysis PDF Author: Sascha Baumanns
Publisher: Logos Verlag Berlin GmbH
ISBN: 3832531912
Category : Mathematics
Languages : en
Pages : 209

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Book Description
Today's most commonly used circuit models increasingly tend to lose their validity in circuit simulation due to rapid technological developments, miniaturization and increased complexity of integrated circuits. The starting point of this thesis was to tackle these challenges by refining the critical parts of the circuit by combining circuit simulation directly with distributed device models. The approach set out in this thesis couples partial differential equations for electromagnetic devices - modeled by Maxwell's equations -, to differential-algebraic equations, which describe basic circuit elements including memristors and the circuit's topology. First, Maxwell's equations are spatially discretized and a potential formulation is derived, the coupled system is then formulated as a differential-algebraic equation with a properly stated leading term and analyzed. Topological and modeling conditions are presented to guarantee the tractability index of these differential-algebraic equations to be no greater than two. Finally, local solvability, perturbation results and an algorithm to calculate consistent initializations are derived for a general class of differential-algebraic equations with a properly stated leading term having tractability index-2.

Numerical Solution of Initial-Value Problems in Differential-Algebraic Equations

Numerical Solution of Initial-Value Problems in Differential-Algebraic Equations PDF Author: K. E. Brenan
Publisher: SIAM
ISBN: 0898713536
Category : Mathematics
Languages : en
Pages : 261

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Book Description
This book describes some of the places where differential-algebraic equations (DAE's) occur.

Mathematical Modelling and Simulation of Electrical Circuits and Semiconductor Devices

Mathematical Modelling and Simulation of Electrical Circuits and Semiconductor Devices PDF Author: Randolph Bank
Publisher: Birkhäuser
ISBN: 3034885288
Category : Mathematics
Languages : en
Pages : 314

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Book Description
Progress in today's high-technology industries is strongly associated with the development of new mathematical tools. A typical illustration of this partnership is the mathematical modelling and numerical simulation of electric circuits and semiconductor devices. At the second Oberwolfach conference devoted to this important and timely field, scientists from around the world, mainly applied mathematicians and electrical engineers from industry and universities, presented their new results. Their contributions, forming the body of this work, cover electric circuit simulation, device simulation and process simulation. Discussions on experiences with standard software packages and improvements of such packages are included. In the semiconductor area special lectures were given on new modelling approaches, numerical techniques and existence and uniqueness results. In this connection, mention is made, for example, of mixed finite element methods, an extension of the Baliga-Patankar technique for a three dimensional simulation, and the connection between semiconductor equations and the Boltzmann equations.

Seminarberichte

Seminarberichte PDF Author:
Publisher:
ISBN:
Category : Mathematics
Languages : en
Pages : 326

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Book Description


Discovering New Knowledge about Trees and Forests

Discovering New Knowledge about Trees and Forests PDF Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 128

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Book Description


Multi-Objective Optimization in Chemical Engineering

Multi-Objective Optimization in Chemical Engineering PDF Author: Gade Pandu Rangaiah
Publisher: John Wiley & Sons
ISBN: 1118341686
Category : Science
Languages : en
Pages : 487

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Book Description
For reasons both financial and environmental, there is a perpetual need to optimize the design and operating conditions of industrial process systems in order to improve their performance, energy efficiency, profitability, safety and reliability. However, with most chemical engineering application problems having many variables with complex inter-relationships, meeting these optimization objectives can be challenging. This is where Multi-Objective Optimization (MOO) is useful to find the optimal trade-offs among two or more conflicting objectives. This book provides an overview of the recent developments and applications of MOO for modeling, design and operation of chemical, petrochemical, pharmaceutical, energy and related processes. It then covers important theoretical and computational developments as well as specific applications such as metabolic reaction networks, chromatographic systems, CO2 emissions targeting for petroleum refining units, ecodesign of chemical processes, ethanol purification and cumene process design. Multi-Objective Optimization in Chemical Engineering: Developments and Applications is an invaluable resource for researchers and graduate students in chemical engineering as well as industrial practitioners and engineers involved in process design, modeling and optimization.

Numerical Analysis of Nonlinear Partial Differential-algebraic Equations

Numerical Analysis of Nonlinear Partial Differential-algebraic Equations PDF Author: Michael Matthes
Publisher: Logos Verlag Berlin GmbH
ISBN: 3832532781
Category : Mathematics
Languages : en
Pages : 191

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Book Description
Various mathematical models in many application areas give rise to systems of so called partial or abstract differential-algebraic equations (ADAEs). A substantial mathematical treatment of nonlinear ADAEs is still at an initial stage.In this thesis two approaches for treating nonlinear ADAEs are presented. The first one represents an extension of an approach by Tischendorf for the treatment of a specific class of linear ADAEs to the nonlinear case. It is based on the Galerkin approach and the theory of monotone operators for evolution equations. Unique solvability of the ADAE and strong convergence of the Galerkin solutions is proven. Furthermore it is shown that this class of ADAEs has Perturbation Index 1 and at most ADAE Index 1. In the second approach we formulate two prototypes of coupled systems where a semi-explicit differential-algebraic equation is coupled to an infinite dimensional algebraic operator equation or an evolution equation. For both prototypes unique solvability, strong convergence of Galerkin solutions and a Perturbation Index 1 result is shown. Both prototypes can be applied to concrete coupled systems in circuit simulation relying on a new global solvability result for the nonlinear equations of the Modified Nodal Analysis under suitable topological assumptions.

Scientific Computation and Differential Equations

Scientific Computation and Differential Equations PDF Author: Christopher T. H. Baker
Publisher:
ISBN:
Category : Differential equations
Languages : en
Pages : 530

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Book Description
Proceedings -- Computer Arithmetic, Algebra, OOP.

Computer Methods for Ordinary Differential Equations and Differential-Algebraic Equations

Computer Methods for Ordinary Differential Equations and Differential-Algebraic Equations PDF Author: Uri M. Ascher
Publisher: SIAM
ISBN: 0898714125
Category : Mathematics
Languages : en
Pages : 304

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Book Description
This book contains all the material necessary for a course on the numerical solution of differential equations.