Tag: Phase

Free Download Multiple 3-phase Fault Tolerant Permanent Magnet Machine Drives: Design and Control
English | 2025 | ISBN: 1394252013 | 314 Pages | PDF, EPUB (True) | 60 MB
Electrical machine drives have become an increasingly important component of transportation electrification, including electric vehicles, railway and subway traction, aerospace actuation, and more. This expansion of electrical machine drives into safety-critical areas has driven an increasingly urgent demand for high reliability and strong fault tolerance. Machine drives incorporating a permanent magnet (PM)-assisted synchronous reluctance machine drive with a segregated winding have shown to exhibit notably reduced PM flux and correspondingly enhanced fault tolerance.

Free Download Timothy P. Ehlers, "Polymer Phase Behavior "
English | ISBN: 1613243367 | 2012 | 316 pages | PDF | 11 MB
This book examines the phase behavior of polymers. The authors present topical research in this field. Topics discussed include the phase behavior of PVP as compared with that of poly(N-vinylcaprolactam); the applicability of lattice cluster theory to the calculation of miscibility; Raman study of the pressure and temperature induced transformations in crystalline polymers of C60; polymer phase behavior in nanocomposites; phase inverting polymer systems in drug delivery medicine and the correlation between stereochemistry and phase behavior.

Free Download Quantum Mechanics on Phase Space By Franklin E. Schroeck Jr. (auth.)
1996 | 672 Pages | ISBN: 9048146399 | PDF | 15 MB
In this monograph, we shall present a new mathematical formulation of quantum theory, clarify a number of discrepancies within the prior formulation of quantum theory, give new applications to experiments in physics, and extend the realm of application of quantum theory well beyond physics. Here, we motivate this new formulation and sketch how it developed. Since the publication of Dirac’s famous book on quantum mechanics [Dirac, 1930] and von Neumann’s classic text on the mathematical foundations of quantum mechanics two years later [von Neumann, 1932], there have appeared a number of lines of development, the intent of each being to enrich quantum theory by extra polating or even modifying the original basic structure. These lines of development have seemed to go in different directions, the major directions of which are identified here: First is the introduction of group theoretical methods [Weyl, 1928; Wigner, 1931] with the natural extension to coherent state theory [Klauder and Sudarshan, 1968; Peremolov, 1971]. The call for an axiomatic approach to physics [Hilbert, 1900; Sixth Problem] led to the development of quantum logic [Mackey, 1963; Jauch, 1968; Varadarajan, 1968, 1970; Piron, 1976; Beltrametti & Cassinelli, 1981], to the creation of the operational approach [Ludwig, 1983-85, 1985; Davies, 1976] with its application to quantum communication theory [Helstrom, 1976; Holevo, 1982), and to the development of the C* approach [Emch, 1972]. An approach through stochastic differential equations ("stochastic mechanics") was developed [Nelson, 1964, 1966, 1967].

Free Download Phase-Integral Method: Allowing Nearlying Transition Points By Nanny Fröman, Per Olof Fröman (auth.)
1996 | 250 Pages | ISBN: 1461275113 | PDF | 6 MB
The efficiency of the phase-integral method developed by the present au thors has been shown both analytically and numerically in many publica tions. With the inclusion of supplementary quantities, closely related to new Stokes constants and obtained with the aid of comparison equation technique, important classes of problems in which transition points may approach each other become accessible to accurate analytical treatment. The exposition in this monograph is of a mathematical nature but has important physical applications, some examples of which are found in the adjoined papers. Thus, we would like to emphasize that, although we aim at mathematical rigor, our treatment is made primarily with physical needs in mind. To introduce the reader into the background of this book, we start by de scribing the phase-integral approximation of arbitrary order generated from an unspecified base function. This is done in Chapter 1, which is reprinted, after minor changes, from a review article. Chapter 2 is the result of re search work that was pursued during more than two decades, interrupted at times. It started in the sixties, when we were still using a phase-integral approximation, which in our present terminology corresponds to a special choice of the base function. At the time our primary aim was to derive expressions for the supplementary quantities needed in order to obtain an accurate connection formula for a real potential barrier, when the energy lies in the neighborhood of the top of the barrier.

Free Download Output Tracking in Non-minimum Phase Systems: A Reduced Order Sliding Mode Design Approach
English | 2024 | ISBN: 303170987X | 200 Pages | PDF EPUB (True) | 19 MB
This book focuses on the systematic design of reduced-order sliding mode output tracking control for non-minimum phase systems. It presents a systematic method for the design of reduced order control law for a wide variety of systems. The target audience primarily comprises research experts in control theory, but the book may also be beneficial for graduate students.

Free Download Gas Phase Chemical Reaction Systems: Experiments and Models 100 Years After Max Bodenstein Proceedings of an International Symposion, held at the "Internationales Wissenschaftsforum Heidelberg", Heidelberg, Germany, July 25 – 28, 1995 By A. H. Zewail (auth.), Professor Dr. J. Wolfrum, Dr. H.-R. Volpp, Professor Dr. R. Rannacher, Professor Dr. J. Warnatz (eds.)
1996 | 343 Pages | ISBN: 3642803016 | PDF | 19 MB
Gas Phase Chemical Reachtion Systems consists of edited papers presented at the International Symposion Gas Phase Chemical ReactionSystems:Experiments and Models 100 Years after MaxBodenstein, held at Heidelberg. It is divided into six sections, reflecting the diversity of the topics discussed. Part I is devoted to experimental reaction dynamics studies employing laser and molecular-beam techniques. Part II is the theoretical counterpart of Part I. Part III summarizes the current status of the Bodenstein (H2+I2) "textbook reaction" with experimental and theoretical results. Part IV shows the different approaches for the calculation of state-specific and thermal rate data. Part V includes papers from the "heterogeneous reactions" session and Part VI is devoted to the mathematical modelling of turbulence, reactive flows and complex chemical reaction systems.

Free Download Hysteresis and Phase Transitions By Martin Brokate, Jürgen Sprekels (auth.)
1996 | 358 Pages | ISBN: 1461284783 | PDF | 29 MB
Hysteresis is an exciting and mathematically challenging phenomenon that oc curs in rather different situations: jt, can be a byproduct offundamental physical mechanisms (such as phase transitions) or the consequence of a degradation or imperfection (like the play in a mechanical system), or it is built deliberately into a system in order to monitor its behaviour, as in the case of the heat control via thermostats. The delicate interplay between memory effects and the occurrence of hys teresis loops has the effect that hysteresis is a genuinely nonlinear phenomenon which is usually non-smooth and thus not easy to treat mathematically. Hence it was only in the early seventies that the group of Russian scientists around M. A. Krasnoselskii initiated a systematic mathematical investigation of the phenomenon of hysteresis which culminated in the fundamental monograph Krasnoselskii-Pokrovskii (1983). In the meantime, many mathematicians have contributed to the mathematical theory, and the important monographs of 1. Mayergoyz (1991) and A. Visintin (1994a) have appeared. We came into contact with the notion of hysteresis around the year 1980.

Free Download Studies in Phase Space Analysis with Applications to PDEs By Thomas Alazard, Nicolas Burq, Claude Zuily (auth.), Massimo Cicognani, Ferruccio Colombini, Daniele Del Santo (eds.)
2013 | 379 Pages | ISBN: 1461463475 | PDF | 4 MB
This collection of original articles and surveys, emerging from a 2011 conference in Bertinoro, Italy, addresses recent advances in linear and nonlinear aspects of the theory of partial differential equations (PDEs). Phase space analysis methods, also known as microlocal analysis, have continued to yield striking results over the past years and are now one of the main tools of investigation of PDEs. Their role in many applications to physics, including quantum and spectral theory, is equally important.Key topics addressed in this volume include:*general theory of pseudodifferential operators*Hardy-type inequalities*linear and non-linear hyperbolic equations and systems*Schrödinger equations*water-wave equations*Euler-Poisson systems*Navier-Stokes equations*heat and parabolic equationsVarious levels of graduate students, along with researchers in PDEs and related fields, will find this book to be an excellent resource.ContributorsT. Alazard P.I. NaumkinJ.-M. Bony F. Nicola N. Burq T. NishitaniC. Cazacu T. OkajiJ.-Y. Chemin M. PaicuE. Cordero A. ParmeggianiR. Danchin V. PetkovI. Gallagher M. ReissigT. Gramchev L. RobbianoN. Hayashi L. RodinoJ. Huang M. Ruzhanky D. Lannes J.-C. SautF. Linares N. ViscigliaP.B. Mucha P. ZhangC. Mullaert E. ZuazuaT. Narazaki C. Zuily

Free Download RC Phase Shift Oscillator using Opamp IC 741: Build and Learn Electronics by
English | 2021 | ISBN: 1230004475330 | 26 pages | PDF | 2.19 Mb
The eBook is a great price offer to you and this eBook provides a practical hands-on learning experience to the engineers, technicians, students, and hobbyists who are curious and eager to learn and make an electronic project on their own. The project in the eBook explains all the project relevant topics in a simple and descriptive manner for you. In addition, lots of electronics project-building stuff included in this eBook which makes it easier for you to build an electronic project.

Free Download Dispersity, Structure and Phase Changes of Proteins and Bio Agglomerates in Biotechnological Processes by Arno Kwade, Ingo Kampen
English | PDF EPUB (True) | 2024 | 548 Pages | ISBN : 3031631633 | 167.4 MB
This book serves as a comprehensive summary of the priority program SPP 1934, which focused on understanding the dispersity, structure, and phase changes of proteins and bio-agglomerates in biotechnological processes. Through contributions from various research groups, the program explored how sensitive proteins and bio-agglomerates are affected by the process environment during fermentation, downstream processing, and formulation. It investigated these effects across three size scales: microscale, encompassing single proteins, clusters, crystals, and virus-like particles; mesoscale, focusing on cells and cell clusters; and macroscale, examining overall process dynamics. The main objective was to enhance biotechnological process chains by elucidating the mechanical, thermal, and chemical stresses that impact protein and bio-agglomerate structures. By gaining insights into these stressors, the program aimed to enable precise control measures to mitigate denaturation and unfavorable growth of proteins and cells. This compilation seeks to contribute to the optimization of biotechnological processes, facilitating advancements in various industries.